1.

Definitions

For the purposes of this Annex, the following definitions shall apply:

1.4.

‘speed limit warning function’ means a function that alerts the driver that the speedometer speed is exceeding the perceived speed limit;

1.5.

‘speed control function’ means a function that attempts to limit the speedometer speed to a stable speed at or below the perceived speed limit;

1.6.

‘perceived speed limit’ means the applicable speed limit as obtained by the speed limit determination system;

1.7.

‘speedometer speed’ means the driving speed of the vehicle as displayed by its on-board speedometer;

1.8.

‘applicable speed limit’ means the maximum permitted legal driving speed for the road travelled, as applicable for the category of vehicle that the intelligent speed assistance system is fitted to;

1.9.

‘catalogue of road signs’ means the list of national and regional variants of road sign types and variable message sign types based upon which the intelligent speed assistance system obtains the perceived speed limit;

1.10.

‘applicable road sign’ means a sign contained in the catalogue of road signs for the category of vehicle to be approved and which is applicable to at least one lane of the vehicle’s carriageway, including both non-electronic, conventional signs and variable message signs, but not including speed limit markings on road pavement;

1.11.

‘explicit speed limit sign’ means an applicable road sign which shows a temporary or permanent numerical value;

1.12.

‘speed limit determination system’ means the specific hardware required to obtain the speed limit through the observation of road signs and signals, based on infrastructure signals or electronic map data, or both;

1.13.

‘implicit speed limit sign’ means an applicable road sign which does not show a numerical value;

1.14.

‘national speed limit’ means the default maximum permitted legal driving speed for the road type travelled in a given Member State, unless indicated otherwise, as applicable for the category of vehicle that the intelligent speed assistance system is fitted to.

2.

General technical requirements

2.1.

An intelligent speed assistance (ISA) system shall comprise a speed limit information function (SLIF) and either a speed limit warning function (SLWF) or a speed control function (SCF).

2.1.1.

The ISA system of a vehicle shall comply with:

(a) ISA system requirements laid down in points 3.1., 3.2. and 3.3.;

(b) SLIF requirements laid down in point 3.4.; and

(c) either of the following requirements:

   (i) SLWF requirements laid down in point 3.5.; or

   (ii) SCF requirements laid down in point 3.6.

2.1.2.

Where the motor vehicle is fitted with an ISA system type-approved as a separate technical unit (STU), the vehicle and its system shall comply with:

(a) ISA system requirements laid down in points 3.1., 3.2. and 3.3.;

(b) SLIF requirements laid down in point 3.4.1. and points 3.4.2.1.1. to 3.4.2.1.4.; and

(c) either of the following requirements:

   (i) SLWF requirements laid down in point 3.5.; or

   (ii) SCF requirements laid down in point 3.6.

2.1.3.

Type-approval of an ISA system as STU shall be subject to the STU complying with the SLIF requirements laid down in point 3.4.2.

2.2.

Subject to point 2.3., the ISA system shall be designed to avoid or minimise the error rate under real driving conditions.

2.3.

ISA systems shall comply with the requirements when the vehicle is operated on a public road or street located within the territory of the European Union, as defined at the time of type-approval.

2.4.

Privacy and data protection.

2.4.1.

The ISA system shall comply with the requirements in the normal operation mode without the use of biometric information, including facial recognition, of any vehicle occupants.

2.4.2.

Without prejudice to the provisions in Article 4 of this Regulation, the ISA system shall not continuously record nor retain or transmit any data related to specific incidents of exceeding the speed limit other than what is necessary for performance of the required ISA functionality or to comply with other Union acts regarding vehicle type-approval (e.g. event data recorder).

2.5.

Where the ISA system is enabled with positioning capabilities, it shall be compatible at least with the positioning services provided by the Galileo and EGNOS systems. In addition, the ISA system may also be compatible with other satellite navigation systems.

3.

Specific technical requirements.

3.1.

ISA failure warning.

3.1.1.

A constant optical signal shall be provided when there is a failure in the ISA system that prevents the performance requirements of this Regulation of being met.

3.1.1.1.

There shall not be an appreciable time interval between each ISA self-check, and subsequently there shall not be a delay in displaying the warning signal, in the case of an electrically detectable failure.

3.1.1.2.

Upon detection of any non-electrical failure condition (e.g. sensor obscuration excluding temporary obscuration such as sun glare) a failure warning signal referred to in point 3.1.1 shall be activated.

3.1.1.3.

The status of a failure that must activate the warning signal referred to in point 3.1.1, but which is not detected under static conditions, shall be retained upon detection of such a failure and continue to be displayed after each activation of the vehicle master control switch, as long as the failure or defect persists.

3.2.

ISA control.

3.2.1.

The conditions set out in points 3.2.1.1., 3.2.1.2. and 3.2.1.3. shall apply as appropriate.

3.2.1.1.

The ISA system shall be automatically reinstated in normal operation mode upon each activation of the vehicle master control switch. Automatic reactivation of ISA system may be conditional upon the driver’s door having been opened.

3.2.1.2.

A constant optical signal shall inform the driver that the ISA system has been fully deactivated. An optical signal lasting at least 10 seconds or until manually cancelled shall inform the driver that the ISA system has been partially deactivated. The failure warning signal specified in point 3.1.1 may be used for this purpose.

3.2.1.3.

Following manual deactivation of the ISA system, it shall be possible for the driver to re-activate the system with no more than the number of actions required to deactivate it.

3.2.2.

Automatic deactivation of the ISA system is permitted in situations when automated systems control the speed of the vehicle, that is, those systems which perform the object and event detection and response dynamic driving subtask (e.g. automated lane keeping system (ALKS)). Such deactivation does not need to be signalled to the driver.

3.2.3.

The vehicle manufacturer may provide for an automatic or manual vehicle speedometer calibration function to minimise the discrepancy between the speedometer speed and the true speed of the vehicle e.g. after tyre replacement, as long as it is ensured that the requirements of UN Regulation No 39 1 are always complied with. In addition, the vehicle manufacturer may take into account a tolerance of up to 3.0% as regards the perceived speed limits used to activate information and warnings.

3.2.4.

The speedometer speed is considered equal to the perceived speed limit if the speedometer speed indication is within 1.0 km/h over the perceived speed limit.

3.2.5.

In the case where the tolerances of the speedometer's measuring mechanism are minimal, the provisions in points 3.2.3. and 3.2.4. mean that the information referred to in point 3.4.1.2. and the warning referred to in point 3.5.1. may be triggered at an indicated speedometer speed and true speed of the vehicle that is slightly above the perceived speed limit.

3.3.

Periodic roadworthiness test procedure.

3.3.1.

3.3.2.

At the time of type-approval, the means to protect against simple unauthorised modification of the operation of the ISA system and failure warning signal chosen by the manufacturer shall be confidentially outlined and provided to the technical service. Alternatively, this protection requirement is fulfilled when a secondary means of checking the correct operational status of the ISA system is available.

3.3.3.

If electronic data (e.g. map data) is used by the ISA system, it shall be possible to easily verify, without the use of tools, the version of the data.

3.4.

SLIF technical requirements.

3.4.1.

SLIF display.

3.4.1.1.

The SLIF display shall be located in the direct field of vision of the driver and be clearly identifiable and legible both day and night. Additional displays of similar information at other locations in the vehicle (e.g. on navigation screen, as projected information, etc.) are permitted and they shall not be subject to the requirements in this point.

3.4.1.2.

In the absence of conditions leading to the deactivation of the system in accordance with points 3.2.1. and 3.2.2., the SLIF display shall display the perceived speed limit to the driver at least when the speedometer speed is more than the perceived speed limit.

3.4.1.2.1.

The perceived speed limit shall be displayed in any of the following ways:

(a) on the speedometer in a manner that is clearly noticeable and distinguishable and which does not reduce the speedometer’s legibility (e.g. optical mark);

(b) as a numerical value, using a symbol resembling a model of speed limit road sign referred to in the Convention on Road Signs and Signals, of 8 November 1968; or

(c) text consisting of the value and the unit of measurement.

Display of additional sub-sign information is permitted in all cases.

3.4.1.3.

When no perceived speed limit is available to the ISA system, due to one or more circumstances referred to in points 5.3.1., 5.3.2 and 5.3.3., a dedicated visual warning, making clear this particular situation, shall be provided to the driver with or without an assumed speed limit indication on the SLIF. The failure warning signal specified in point 3.1.1. shall not be used for the purpose of such visual warning. Alternatively, there shall be complete absence of perceived speed limit information, a symbol for question mark “?” shall be displayed prominently adjacent to a numerical assumed speed limit as indicated on the SLIF display or a symbol for question mark “?” or two symbols for hyphens “--” or three symbols for hyphens “---” shall be displayed instead of a numerical value on the SLIF display.

3.4.1.4.

When the SLIF display displays the perceived speed limit, even when the speedometer speed is lower than the perceived speed limit (e.g. always on or on demand with activated ISA), the system shall also provide a subtle and not-annoying audible notification each time when the perceived speed limit changes. This feature may be user configurable (e.g. sound, volume, permanently switched off).

3.4.1.5.

When the ISA system is deactivated, display of the perceived speed limit is permitted. No audible notifications as referred to in point 3.4.1.4. are required in such case.

3.4.2.

Speed limit determination.

3.4.2.1.

Country of operation setting.

3.4.2.1.1.

If knowledge of the country of operation is a prerequisite for correct speed limit determination, the ISA system shall comply with either of the following conditions:

(a) the system is able to automatically detect the country-code and set it with or without user confirmation; or

(b) the system allows the driver to manually select the country-code.

If knowledge of the region of operation is a prerequisite for correct speed limit determination, the system may adopt the more common applicable speed limit throughout the various regions of that country, to the discretion of the manufacturer.

3.4.2.1.2.

The ISA system shall retain the manually set or user confirmed country of operation, even after re-activation of the vehicle master control switch.

3.4.2.1.3.

The manual setting procedure for the country of operation shall be intuitive and through a non-complex interface. In particular, it shall be easy to toggle between current and previous country of operation choices.

3.4.2.1.4.

In case of the need for manual setting or user confirmation, the motor vehicle’s user instructions (e.g. owner’s manual, vehicle handbook) shall clearly specify that this procedure is required for correct operation of the ISA system.

3.4.2.1.5.

Motor vehicles intended for local or regional operation (e.g. buses of Classes I and A) may have limited ISA system operational capabilities as regards knowledge of the country or region of operation. The user instructions of the motor vehicle shall clearly specify the limitations of the ISA system and provide information on how to obtain alternative country or regional parameters from the manufacturer if the place of operation of the motor vehicle changes. Until the introduction of a dedicated entry in the Certificate of Conformity, the text “ISA functionality is limited to country or region of operation” shall be added to the “remarks” in the Certificate of Conformity as to allow inclusion of this information in on-board vehicle registration papers.

3.4.2.2.

Perceived speed limit determination through observation of explicit speed limit signs.

3.4.2.2.1.

In the absence of conditions leading to the deactivation of the system in accordance with points 3.2.1. and 3.2.2., the SLIF shall be able, through direct visual observation of road signs or other effective methods, to recognise all explicit speed limit signs where the associated applicable speed limit for the category of vehicle to be approved matches the numerical value shown on the sign, and determine the applicable speed limit within 2.0 seconds before or after the manufacturer’s declared reference point on the motor vehicle (also to be specified for STUs) passes the road sign. This requirement shall be met at least when the following conditions are satisfied:

(a) the signs meet conditions set out in point 3.4.2.2.2.; and

(b) the signs are encountered in the operational and environmental conditions referred to in point 3.4.2.2.3.

Compliance with the first paragraph shall be demonstrated in accordance with the relevant test procedures and documentation specified in point 4.1.

For vehicle driving speeds below 20 km/h, the applicable speed limit may be determined within 10 m forward or rearward of the manufacturer’s declared reference point referred to in the first paragraph.

3.4.2.2.2.

Road sign conditions at time of the assessment:

(a) of a design and size conforming to the applicable standards in the Member State concerned;

(b) positioned in a way conforming to the applicable standards in the Member State concerned;

(c) showing no significant damage (e.g. fading, reduced retro-reflectivity, bending, cracking, vandalism) that materially affects their visual properties; and

(d) not partially or fully covered (e.g. foliage, snow or dirt obscuring the sign, or deliberate invalidation during roadworks).

3.4.2.2.3.

Operational and environmental conditions at time of the assessment:

(a) full operating speed range of the vehicle;

(b) with unobstructed view of the road sign for a continuous period of at least 1.0 seconds;

(c) in all illumination conditions without direct blinding sunlight and with passing beam head lamps illumination if appropriate, day or night; and

(d) in the absence of weather conditions affecting the visibility of road signs (e.g. fog, heavy rain, snow).

3.4.2.3.

Perceived speed limit determination through observation of road signs and signals.

3.4.2.3.1.

In the absence of conditions leading to the deactivation of the system in accordance with points 3.2.1. and 3.2.2., the SLIF shall be able, through observation of road signs and signals using all relevant ISA system inputs (e.g. camera, electronic map data), to determine the road speed limits associated with all applicable road signs included in the catalogue of road signs in Annex II, for the category of vehicle to be approved, within 2.0 seconds before or after the reference point referred to in point 3.4.2.2.1. passes the road sign. This requirement shall be met at least when the following conditions are satisfied:

(a) signs meet the conditions set out in point 3.4.2.2.2.; and

(b) signs are encountered in the operational and environmental conditions referred to in point 3.4.2.2.3.

Compliance with the first paragraph shall be demonstrated in accordance with the relevant tests procedures referred to in point 4.2.

For vehicle driving speeds below 20 km/h, the applicable speed limit may be determined within 10 m forward or rearward of the reference point referred to in point 3.4.2.2.1.

3.4.2.3.2.

The SLIF is not required to take into account special variable conditions influencing the national speed limit (i.e. conditions which require information going beyond the current country of operation and the current road type, e.g. trailer status, prevailing environmental conditions, time of day, time of year, driver age or experience, standing passengers, dangerous goods, oversized load) In the case that special variable conditions may be present and the system is not capable of taking them into account, the speed limit determination shall default to the assumed most common condition in typical normal operation.

3.4.2.4.

Speed limit determination real-world driving reliability.

3.4.2.4.1.

In the absence of conditions leading to the deactivation of the system according to points 3.2.1. and 3.2.2., the SLIF shall be able, through observation of road signs and signals, using all relevant system inputs, for example, camera input and electronic map data, where provided in-vehicle for this purpose, to reliably determine the applicability of the national speed limit and speed limits associated with all applicable road signs included in the catalogue of road signs in Annex II, for the category of vehicle to be approved. This requirement shall be met at least when the following conditions are satisfied:

(a) signs meet the conditions set out in point 3.4.2.2.2.; and

(b) signs are encountered in the operational and environmental conditions specified in point 3.4.2.2.3.

3.4.2.4.2.

The requirement for reliable determination of the applicable speed limit is fulfilled if the distance-based performance requirement is met in real-world driving.

True positive distance (‘TP_D’): the correct speed limit shall be determined for at least 90% of the total distance and for at least 80% of the distance driven on each of the three road types (urban roads and streets, non-urban roads, and motorways/expressways/dual carriageways) at least for applicable speed limits referred to in point 3.4.2.4.1. and where no special variable conditions referred to in point 3.4.2.3.2 apply.

Compliance shall be demonstrated in accordance with a real-world driving test as specified in point 4.3.

3.4.2.4.3.

Before conducting the real-world driving test, the technical service, the type-approval authority and the vehicle or STU manufacturer shall agree on a route outline. The route outline shall comply with the following conditions:

(a)    it is located on public roads within the territory of the European Union, excluding the outermost regions in accordance with Article 349 of the Treaty of the Functioning of the European Union (TFEU); and

(b)    it is chosen with the intention to generate a passed or failed test by virtue of the technical performance of the ISA system and not by virtue of an extreme route choice.

3.4.2.4.4.

To demonstrate system performance at Union level, the vehicle or STU manufacturer shall provide technical documentation that contains the following information:

(a)    information on the basic design of the ISA system and a description of the speed limit determination system, including the sensors and, if applicable, electronic map data sources used; and

(b)    description of due diligence activities performed to provide evidence that the requirements in point 3.4.2.4.1. are met for operation in all Member States, excluding the outermost regions in accordance with Article 349 of the Treaty of the Functioning of the European Union (TFEU).

The manufacturer shall carry out the following due diligence activities:

The technical service shall assess the technical documentation provided to assess whether reasonable and adequate steps have been taken to ensure that the requirements in point 3.4.2.4.1. are met for correct operation of the ISA system in all Member States.

3.4.2.4.5.

Life cycle performance

3.4.2.4.5.1.

The vehicle manufacturer shall ensure that the reliability of speed limit determination as required in point 3.4.2.4.2. is maintained for at least 14 years after the date of manufacture of the vehicle. The same applies when an STU is fitted by the vehicle manufacturer.

3.4.2.4.5.2.

3.5.

SLWF technical requirements.

3.5.1.

In the absence of conditions leading to the deactivation of the ISA system in accordance with points 3.2.1. and 3.2.2., if the perceived speed limit is known and the speedometer speed exceeds it, the SLWF shall warn the driver as specified in point 3.5.2.

3.5.2.

The warning indication shall be provided by any of the following:

(a) a visual warning and a cascaded acoustic warning;

(b) a visual warning and a cascaded haptic warning; or

(c) a haptic warning alone.

At times when the driving speed of the vehicle is actively controlled by a vehicle system where the driver is not expected to be touching the accelerator control (e.g. cruise control) the use of a haptic warning is not permitted. In this case the system shall attempt to reduce the driving speed to or below the perceived speed limit automatically, e.g. by disengaging or reducing engine power, or a visual warning and a cascaded acoustic warning shall be provided.

3.5.2.1.

Visual warning and cascaded acoustic or visual warning and cascaded haptic warning.

3.5.2.1.1.

The visual warning shall be noticeable and easily recognisable by the driver and be provided by flashing of the SLIF display or flashing of an additional optical signal adjacent to the SLIF display. It shall be provided within 1.5 seconds from when the speedometer speed exceeds the perceived speed limit and for at least 30 seconds or until the speedometer speed is less than or equal to the perceived speed limit when this occurs earlier.

3.5.2.1.2.

The cascaded acoustic warning shall be noticeable by the driver, unique and easily recognisable and be provided by a continuous or intermittent sound signal or by vocal information. Where vocal information is employed, the vehicle manufacturer shall ensure that it is easily configurable by the driver to use any of the EU official languages. The acoustic warning may be varied to indicate the magnitude or time that the perceived speed limit has been exceeded for.

3.5.2.1.3.

The cascaded haptic warning shall be noticeable by the driver and be provided directly or indirectly through the accelerator control when the driver maintains an application force as well as a driving speed that exceeds the perceived speed limit. This shall be achieved by any of the following:

(a) increasing the restoring force of the accelerator control; or

(b) vibrating the accelerator control.

3.5.2.1.4.

The cascaded acoustic warning and cascaded haptic warning shall be provided, when any of the following conditions are met, for constant vehicle speeds:

(a) Speedometer speed ≥ 130% perceived speed limit, for 3.0 seconds and longer;

(b) Speedometer speed ≥ 120% perceived speed limit, for 4.0 seconds and longer;

(c) Speedometer speed ≥ 110% perceived speed limit, for 5.0 seconds and longer;

(d) Speedometer speed > 100% perceived speed limit, for 6.0 seconds and longer.

The system may be designed in such a way that it employs a linearly interpolated time between the respective speed and time values for points (a) and (d).

3.5.2.1.4.1.

When the vehicle is accelerating, the manufacturer shall select the appropriate time for the conditions referred to in point 3.5.2.1.4., points (b), (c) or (d), or 3.0 seconds as well as any duration between these two values.

3.5.2.1.4.2.

When the vehicle is decelerating and none of the conditions laid down in point 3.5.3. are met, the manufacturer shall select the appropriate time for the conditions referred to in point 3.5.2.1.4., points (a), (b) or (c), or 6.0 seconds as well as any duration between those two values.

3.5.2.1.5.

The cascaded acoustic warning shall be provided until the speedometer speed is less than or equal to the perceived speed limit or for at least 3.0 seconds after initial activation of the cascaded acoustic warning. However, in no case shall the acoustic warning last more than 5.0 seconds, also in case of successive speed limit changes, in order to minimise driver annoyance.

3.5.2.1.6.

The cascaded haptic warning shall be provided until the speedometer speed is less than or equal to the perceived speed limit or for at least 10 seconds after initial activation of the cascaded haptic warning. However, in no case shall the haptic warning last more than 15 seconds, also in case of successive speed limit changes, in order to minimise driver annoyance.

3.5.2.1.7.

The cascaded acoustic or cascaded haptic warning shall be terminated immediately upon its acknowledgement by deliberate driver action (e.g. button press) if the manufacturer chooses to implement such functionality.

3.5.2.1.8.

(d) activation of an endurance braking system.

3.5.2.2.

3.5.2.2.1.

3.5.2.2.2.

The haptic warning alone shall be provided within 1.5 seconds from when the speedometer speed exceeds the perceived speed limit and until the speedometer speed is less than or equal to the perceived speed limit or for at least 15 seconds after its initial activation. However, in no case shall the haptic warning last more than 20 seconds, also in case of successive speed limit changes, in order to minimise driver annoyance.

3.5.2.2.3.

The haptic warning alone shall be terminated immediately upon its acknowledgement by driver deliberate action (e.g. button press) if the manufacturer chooses to implement such functionality.

3.5.3.

(d) the perceived speed limit has changed to a lower value.

3.5.4.

It is not permitted that a haptic warning system is combined with an acoustic warning function, even if provided on a voluntary basis, unless all requirements for cascaded acoustic warning are also met.

3.5.5.

The vehicle may be equipped with a means to suspend the SLWF to allow for the presentation of more critical warnings (e.g. forward collision warning, lane-keeping assistance). The manufacturer shall demonstrate that all applicable warnings are presented to the driver appropriately.

3.5.6.

The SLWF of vehicles of categories M2, M3, N2 and N3 that are equipped with a speed limitation device and tachograph, in accordance with Regulation (EU) No 165/2014 4 , shall be suspended from 9 km/h below the applicable speed limitation setting, and faster vehicle driving speeds, when the relevant perceived speed limit is not provided by means of an explicit speed limit sign, or electronic map data based on the presence of an explicit speed limit sign, that is appropriate for the vehicle category in question. The SLWF shall operate normally within that range in case of the presence of an explicit speed limit sign that is appropriate for the vehicle category in question. The SLWF shall also operate normally within that range when the expected system feedback in the catalogue of road signs in Annex II is to revert back to the previously applicable implicit speed limit and when this is lower than the previous one. The SLWF shall operate normally at speeds of 10 km/h below the applicable speed limitation setting, and slower vehicle driving speeds.

3.5.5.

The SLWF warning function shall be demonstrated in accordance with the relevant test procedure specified in point 4.4.

3.6.

SCF technical requirements

3.6.1.

In the absence of conditions leading to the manual or automatic deactivation of the ISA system as referred to in points 3.2.1. and 3.2.2., the SCF shall attempt to limit the speedometer speed to the perceived speed limit.

3.6.1.1.

The SCF shall attempt to limit the speedometer speed to a stabilised speed by reducing the vehicle’s propulsion power and driveline torque. The SCF shall not actuate the vehicle’s service braking system except for vehicles of categories M1 and N1, where the vehicle’s service braking system may be actuated. An endurance brake (e.g. retarder) may be incorporated only if it operates after the SCF has restricted the propulsion power to a minimum. The deceleration rate of the vehicle shall be ≤ 3.0 m.s-2.

3.6.1.2.

The SCF intervention shall start within 1.5 seconds from when the speedometer speed exceeds the perceived speed limit.

3.6.1.3.

When stable speed control has been achieved, the speedometer speed shall not vary by more than 4% or 2 km/h, whichever is greater, in relation to the stabilised speed, and the rate of change of speedometer speed shall be ≤ 0.2 m.s-2 when measured on a period of at least 0.1 seconds. The stabilised speed shall fall within the following range: (perceived speed limit – 5 km/h) ≤ stabilised speed ≤ perceived speed limit.

The manufacturer shall endeavour to stay as close to the perceived speed limit as possible, in order to minimise driver annoyance.

3.6.1.4.

It shall be possible for the driver to override the SCF intervention by performing a positive action, for example by pressing the accelerator control harder or deeper. However, it shall not be permitted that this can be achieved only through accelerator control kick-down (i.e. full depression of accelerator control). When the driver has overridden the SCF, it shall be temporarily suspended and shall be re-initiated after any of the following events:

(a) the speedometer speed becomes equal to or lower than the perceived speed limit;

(b) full release of the accelerator control for more than 3.0 seconds;

(c) activation of an endurance braking system; or

(d) the perceived speed limit has changed to a lower value.

In case of re-initiation of the SCF following events referred to in first paragraph, points (b) and (c), the vehicle shall not slow down abruptly, but it shall be at a rate similar to the deceleration rate of the vehicle just before the re-initiation.

3.6.1.5.

It is permitted that the driver can select a positive action setting that is more restrictive (e.g. kick-down necessary to override) on a voluntary basis.

3.6.1.6.

It is permitted that the driver can engage a manual speed limitation function, provided that it does not automatically switch off the ISA system at the same time.

3.6.1.7.

The SCF shall permit a normal use of the accelerator control for gear selection.

3.6.2.

At times when the driving speed of the vehicle is actively controlled by a vehicle system where the driver is not expected to be touching the accelerator control (e.g. cruise control), and in the absence of conditions leading to the deactivation of the ISA system in accordance with points 3.2.1. and 3.2.2., the requirements of point 3.6.1. shall continue to apply unless a SLWF is activated instead.

3.6.3.

3.6.4.

The SCF intervention shall be demonstrated in accordance with the relevant tests specified in point 4.5.

3.6.5.

An ISA system comprising of SLIF and SLWF may additionally have SCF-like characteristics, as long as the override and positive action requirements laid down in point 3.6.1.4. are observed.

4.

Test procedures.

4.1.

SLIF test procedure: Perceived speed limit determination through observation of explicit speed limit signs test.

4.1.1.

Subject vehicle conditions:

4.1.1.1.

Test mass:

The vehicle mass shall be the mass in running order.

4.1.1.2.

Tyres:

The tyres shall be bedded in and the tyre pressures shall be adjusted in accordance with the vehicle manufacturer’s specifications.

4.1.1.3.

Pre-test conditioning:

If requested by the manufacturer the subject vehicle may be driven a maximum of 100 km on a mixture of urban and rural roads with other traffic and roadside furniture to calibrate the sensor system, and the country or region of operation can be set (manually or automatically) to that of test.

4.1.2.

Road signs:

The objective of these tests is that for instance temporary signs placed on the side of a road at roadworks are duly recognised by the ISA system. This may be achieved by the use of an observation sensor, but also on the basis of real-time information shared by other vehicles.

The road signs used for the tests shall be explicit speed limit signs where the associated applicable speed limit for the category of vehicle to be approved matches the numerical value shown on the sign. These signs shall meet all conditions specified in point 3.4.2.2.2. The signs shall be positioned in a way to avoid multiple signs being in the system's field of view simultaneously.

A minimum of five different explicit speed limit signs, including non-electronic road signs and those displayed on a variable message sign, as used in the Member State where testing takes place, shall be selected by the technical service for testing. The signs used for the tests shall be recorded in the test report. To test the perceived speed limit determination through direct or indirect visible observation, the position of the signs used for testing shall not be included in the electronic map data of the vehicle.

The manufacturer shall demonstrate, through the use of documentation, compliance with all other explicit speed limit signs as included in the catalogue of road signs in Annex II, for the category of vehicle to be approved, where the associated applicable speed limit for the category of vehicle to be approved matches the numerical value shown on the sign. Any such documentation shall be appended to the test report dossier.

4.1.3.

Testing conditions:

The tests shall be carried out as follows:

(a) on a flat surface which is free from uneven patches, standing water, snow and ice, and provides the driver an unobstructed view of the road sign for a continuous period of at least 1.0 seconds;

(b) in all illumination conditions without direct blinding sunlight and with passing beam head lamps switched on if appropriate; and

(c) in the absence of weather conditions affecting the visibility of signs.

At the manufacturer’s discretion and with the agreement of the technical service the tests may be performed under conditions deviating from the conditions referred to in the first paragraph.

4.1.3.1.

With agreement between the manufacturer and the technical service, the tests can be performed in either of the following locations:

(a) on a public road; or

(b) on a test track, provided the SLIF does not require electronic map data to function correctly, unless it is included in the electronic map data.

In both cases the environment may be such that other vehicles are being driven on the same test route as the subject vehicle, for instance to facilitate the availability of real-time data that can be used by other vehicles without a camera-based observation system. The relevant necessary conditions shall be specified in detail by the manufacturer and agreed by the technical service and type-approval authority prior to the tests taking place. This agreement shall be based on a positive assessment of the reasonability, practicability and authenticity of real-world application.

In both cases the different signs shall be selected and placed by the technical service. All signs used for the tests on public roads shall differ from the ones that are normally present, or be temporarily modified ones, in order to assess the observational capacity, or equivalent, of the system. This test obligation is not waived in case of dispute with local authorities and the test shall then be carried out elsewhere.

4.1.4.

Test procedure:

The subject vehicle shall be driven in a smooth manner so that its attitude is stable past the road sign selected for testing in the following conditions:

(a) a speedometer speed > speed indicated on explicit sign; and

(b) in the centre of the test lane.

By agreement between the manufacturer and the technical service the test track-based procedure described above can be replaced with a laboratory-based procedure that has been shown to be equivalent.

4.1.4.1.

The technical requirements are fulfilled if the SLIF displays the perceived speed limit value that is equal to the speed limit shown on all road signs tested within 2.0 seconds before or after the vehicle’s reference point passes the relevant signs. For vehicle speeds slower than 20 km/h this shall be within 10 m forward or rearward of the vehicle’s reference point.

4.2.

SLIF: Perceived speed limit determination through observation of road signs and signals test procedure.

4.2.1.

The subject vehicle conditions are those as specified in points 4.1.1. to 4.1.1.3.

4.2.2.

Road signs:

The road signs used for the tests shall be implicit speed limit signs. These signs shall meet the conditions specified in point 3.4.2.2.2. The signs shall be positioned in a way to avoid multiple signs being in the system's field of vision simultaneously.

A minimum of five different implicit speed limit signs, including non-electronic road signs and those displayed on a variable message sign, as used in the Member State where testing takes place, shall be selected by the technical service for testing. The signs used for the tests shall be recorded in the test report.

The manufacturer shall demonstrate, through the use of documentation, compliance with all other applicable road signs as included in the catalogue of road signs in Annex II, for the category of vehicle to be approved. Any such documentation shall be attached to the test report dossier.

4.2.3.

Testing conditions:

The testing conditions set out in point 4.1.3. shall apply.

4.2.3.1.

With agreement between the manufacturer and the technical service, the tests can be performed in either of the following locations:

(a) on a public road; or

(b) on a test track resembling a realistic road environment to allow the SLIF to determine the road type, provided the SLIF does not require electronic map data to function correctly, unless it is included in the data.

In both cases the environment may be such that other vehicles are being driven on the same test route as the subject vehicle, for instance to facilitate the availability of real-time data that can be used by other vehicles without a camera-based observation system. The relevant necessary conditions shall be specified in detail by the manufacturer and agreed by the technical service and type-approval authority prior to the tests taking place. This agreement shall be based on a positive assessment of the reasonability, practicability and authenticity of real-world application.

In both cases the different signs may be selected and placed by the technical service or may be existing signs, also when at the same time part of the real-world driving reliability test in point 4.3., in agreement with the manufacturer.

4.2.4.

Test procedure:

Drive the subject vehicle in a smooth manner so that its attitude is stable past the road sign selected for testing in the following conditions:

(a) a speedometer speed:

   (i) ≤ 20% lower than the sign indicates for tests on a public road; and

   (ii) ≥ 10% greater than the sign indicates for tests on test track;

(b) in the centre of the test lane.

By agreement between the manufacturer and the technical service the test track or road-based procedure described above can be replaced with a laboratory-based procedure that has been shown to be equivalent.

4.2.4.1.

The technical requirements are fulfilled if the SLIF determines the perceived speed limit value that is equal to the expected system feedback indicated in the catalogue of road signs, or the applicable speed limit associated with all signs tested as included in the catalogue of road signs in Annex II, for the category of vehicle to be approved, and if the SLIF displays the perceived speed limit when the speedometer speed exceeds the perceived speed limit associated with those signs, within 2.0 seconds before or after when the vehicle’s reference point passes the relevant signs. For vehicle speeds below 20 km/h this shall be within 10 m forward or rearward of the vehicle’s reference point. Appropriate results from the real-world driving reliability test can also be used to demonstrate fulfilment of the requirements.

4.3.

SLIF: Speed limit determination real-world driving reliability test.

4.3.1.

The test drive shall comply with the conditions set out in points 4.3.1.1. to 4.3.1.5. The technical service may agree to accept in house test data for certain portions of the type-approval test.

4.3.1.1.

The test drive shall be appropriate to measure the system’s performance at correctly determining the applicable speed limit using the performance criteria specified in point 3.4.2.4.2.

4.3.1.2.

The test drive shall involve driving on public roads and streets within the territory of the European Union, as agreed between the manufacturer, the technical service and the type-approval authority.

4.3.1.3.

The test drive shall involve driving on urban roads and streets, non-urban roads, and motorways/expressways/dual carriageways, where each of the three road types shall represent at least 25% of the total distance of the route. The route shall be one consecutive route with the same start and end point, where any repeated parts of the route in the same direction shall not count towards the test distance.

4.3.1.4.

The test drive shall involve driving in daylight and darkness conditions, where darkness shall represent at least 15% of the total distance.

4.3.1.5.

The test drive shall consist of a test distance of 400 km. In agreement between the technical service and the manufacturer, the test may be terminated earlier if the test distance exceeds 300 km and the performance ‘TP_D’ varied between ± 5.0% within the final 50 km of the route when calculated on a continuous basis.

4.3.2.

Performance metric calculation:

The performance metric shall be calculated as:

TP_D = (d_correct/d_total) * 100%

where:

d_total – total distance driven for test drive where the applicable speed limit was indicated by a road sign or signal as specified in point 3.4.2.4.1. or where the national speed limit applied;

d_correct – distance driven for test drive where the applicable speed limit was indicated by a road sign or signal as specified in point 3.4.2.4.1., and during which any of the following conditions (a), (b) or (c) were fulfilled:

(a) the perceived speed limit matched the expected system feedback indicated in the catalogue of road signs in Annex II;

(b) the perceived speed limit matched the applicable speed limit; or

(e) where special variable conditions in accordance with point 3.4.2.3.2. applied, the perceived speed limit matched the national speed limit for the assumed most common condition.

For the real-world driving assessment, it shall be checked that the SLIF adopts the relevant perceived speed limits at a reasonable distance before or after the point where such relevant applicable or national speed limit applies.

4.4

SLWF: Speed limit warning function test procedure.

4.4.1

The subject vehicle conditions are those as referred to in points 4.1.1. to 4.1.1.3.

4.4.2

The technical service shall select road signs for the test as referred to in point 4.1.2.

4.4.3

The testing conditions are those as specified in point 4.1.3.

4.4.4

Test procedures for ISA system options, as referred to in point 3.5.2.(a), (b) and (c)

4.4.4.1.

Test 1 (warnings test):

The technical service shall select a test speed limit. The initial speed limit shall be at least 38% higher than the test speed limit. The perceived speed limit shall be set at the initial speed limit.

The subject vehicle shall be driven at a distance from the road edge such that the position of the sign meets applicable standards in the Member State concerned and with an activated SLWF using the accelerator control in a smooth manner so that its attitude is stable past a road sign indicating the test speed limit as follows:

(i) 1% ≤ speedometer speed ≤ 8% higher than the test speed limit;

(ii) 11% ≤ speedometer speed ≤ 18% higher than the test speed limit;

(iii) 21% ≤ speedometer speed ≤ 28% higher than the test speed limit; and

(iv) 31% ≤ speedometer speed ≤ 38% higher than the test speed limit.

The subject vehicle shall continue at a constant speed until the cascaded acoustic or cascaded haptic warning is observed and after which:

- the subject vehicle shall continue at the constant speed for at least a further 5.0 seconds and then slow down within 3.0 seconds to a speedometer speed ≤ test speed limit before 15 seconds have passed, for the visual warning and cascaded acoustic warning check; or

- the subject vehicle shall continue at the constant speed for at least a further 15 seconds and then slow down within 3.0 seconds to a speedometer speed ≤ test speed limit before 22 seconds have passed, for the visual warning and cascaded haptic warning check.

The subject vehicle shall repeat the test at the constant speed until the visual warning ends or for a maximum of 60 seconds. The relevant times shall be recorded in the test report.

Test 2 (deactivation (no warnings) test):

The ISA system shall be deactivated and Test 1 shall be repeated at a speedometer speed selected by the technical service. The perceived speed limit shall be set, or attempted to be set, at the test speed limit.

Test 3 (SLWF with driver aid control test):

In the case that the vehicle type may be equipped with a driver aid where the driver is not expected to be touching the accelerator control (e.g. cruise control), a test shall be performed with an activated SLWF and the driver aid controlling the speed of the vehicle for least one speedometer speed selected by the technical service.

4.4.4.2.

For ISA systems with haptic warning alone as referred to in point 3.5.2.(c), the following tests shall be performed:

Test 1 (warnings test):

The technical service shall select a test speed limit. The initial speed limit shall be at least 38% higher than the test speed limit. The perceived speed limit shall be set at the initial speed limit.

The subject vehicle shall be driven at a distance from the road edge such that the position of the sign meets applicable standards in the Member State concerned and with an activated SLWF using the accelerator control in a smooth manner so that its attitude is stable past a road sign indicating the test speed limit at a speedometer speed at least 1% higher than the test speed limit as follows:

The subject vehicle shall continue at a constant speed until the haptic warning is observed and after which:

- the subject vehicle shall continue at the constant speed for a further 11 seconds and then slow down within 4 seconds to a speedometer speed ≤ test speed limit before 15 seconds have passed, for the haptic warning only check.

The subject vehicle shall repeat the test at the constant speed until the haptic warning ends or for a maximum of 60 seconds. The relevant times shall be recorded in the test report.

Test 2 (deactivation (no warnings) test):

The ISA system shall be deactivated and Test 1 shall be repeated at a speedometer speed selected by the technical service. The perceived speed limit shall be set, or attempted to be set, at the test speed limit.

Test 3 (SLWF with driver aid control test):

In the case that the vehicle type may be equipped with a driver aid where the driver is not expected to be touching the accelerator control (e.g. cruise control), the Test 1 procedure referred to in point 4.4.4.1. shall be performed with an activated SLWF and the driver aid controlling the test speeds of the vehicle.

4.4.4.3.

For all tests under ISA system options referred to in point 3.5.2.(a), (b) and (c), by agreement between the manufacturer and the technical service, the test track-based procedures under points 4.4.4.1. and 4.4.4.2. can be replaced with laboratory-based procedures that have been shown to be equivalent.

4.4.4.4.

The technical requirements for the ISA system are fulfilled if the following conditions are met:

4.4.4.4.1.

For ISA systems referred to in points 3.5.2.(a), (b) and 4.4.4.1. (visual warning and cascaded acoustic or cascaded haptic warning):

Test 1: Warnings test assessment

A visual warning compliant with the requirements set out in point 3.5.2.1.1. is provided within 1.5 seconds plus the time or distance allowed for the perceived speed limit determination after passing the sign and a cascaded acoustic or cascaded haptic warning compliant with the technical requirements set out in points 3.5.2.1.2. to 3.5.2.1.8. is present and noticeable as follows:

(ii) for 11% ≤ speedometer speed ≤ 18% higher than the test speed limit: from not more than 5.0 seconds after passing the sign;

(iii) For 21% ≤ speedometer speed ≤ 28% higher than the test speed limit: from not more than 4.0 seconds after passing the sign; and

(iv) For 31% ≤ speedometer speed ≤ 38% higher than the test speed limit: from not more than 3.0 seconds after passing the sign;

plus the time or distance allowed for the perceived speed limit determination after passing the relevant signs.

Test 2: Deactivation (no warnings) test assessment):

No warnings (visual, haptic or acoustic) are presented.

Test 3: SLWF with driver aid control test assessment:

Visual and acoustic warnings are presented as for Test 1 or the system disengages or attempts to reduce the driving speed to the perceived speed limit automatically.

4.4.4.4.2.

For ISA systems referred to in points 3.5.2.(c) and 4.4.4.2. (haptic warning alone):

Test 1: Warnings test assessment:

A haptic warning compliant with the requirements set out in point 3.5.2.2. is provided within 1.5 seconds plus the time or distance allowed for the perceived speed limit determination after passing the relevant sign.

Test 2: Deactivation (no warnings) test assessment:

No visual, haptic or acoustic warnings are presented.

Test 3: SLWF with driver aid control test assessment:

Visual and acoustic warnings are presented as for ISA system option referred to in point 3.5.2.(a) Test 1 warnings test assessment in point 4.4.4.4.1., or the system disengages or attempts to reduce the driving speed to the perceived speed limit automatically.

4.5.

SCF tests

4.5.1.

Subject vehicle conditions

4.5.1.1

The subject vehicle conditions are those as specified in points 4.1.1. to 4.1.1.3.

4.5.1.2

The gearbox type, tyre size and gear selection for the tests shall be based on a worst-case selection for the type to be approved, in agreement with the technical service.

4.5.1.3

The settings of the drivetrain of the test vehicle shall conform to the specifications of the manufacturer.

4.5.2

The tests shall be performed on a test track or on a chassis dynamometer.

4.5.2.1

Test track conditions.

4.5.2.1.1

The test track surface shall be suitable to enable a stabilised speed to be maintained and shall be free from uneven patches, standing water, snow and ice. Gradients shall be ≤ 2% and shall not vary by more than ± 1% excluding camber effects.

4.5.2.1.2

The mean wind speed measured at a height at least 1 m above the ground shall be less than 6 m/s with gusts not exceeding 10 m/s.

4.5.2.1.3

At the manufacturer’s discretion and with the agreement of the technical service the tests may be performed under conditions deviating from what is described above, provided that they are worst-case.

4.5.2.2

Chassis dynamometer specifications.

4.5.2.2.1

The equivalent inertia of the vehicle mass shall be reproduced on the chassis dynamometer with an accuracy of ± 10%. The time shall be measured with an accuracy of ≤ 0.1 seconds.

4.4.2.2.2

The power absorbed by the dynamometer brake during the test shall be set to correspond with the vehicle’s resistance to progress at the tested speeds. This power may be established by calculation and shall be set to an accuracy of ± 10%.

4.5.3

SCF test procedures.

4.5.3.1

SCF acceleration test procedure.

4.5.3.1.1.

The test procedure specified in point 4.5.3.1.2. shall be repeated for the following speed limits:

(a) urban speed limit: Initial speedometer speed ≤ 20 km/h; test speed limit = 50 km/h;

(b) inter urban speed limit: Initial speedometer speed ≤ 50 km/h; test speed limit = 80 km/h;

(c) motorway speed limit: Initial speedometer speed ≤ 100 km/h; test speed limit = 130 km/h.

Only those tests where the test speed limit is lower than the vehicle’s maximum design speed have to be performed.

4.5.3.1.2.

The subject vehicle shall be driven with an activated SCF within the initial speedometer speed range. The perceived speed limit shall be set to the test speed limit. The vehicle shall then be accelerated, without applying a positive override action, until an SCF intervention is initiated. While the intervention remains active, the vehicle shall be driven long enough to allow an assessment of the stabilised speed.

During the test, the speedometer speed shall be continuously recorded. The stabilised speed shall be calculated by averaging the speedometer speed over a time interval of 20 seconds beginning 10 seconds after the speedometer speed first reached the perceived speed limit minus 10 km/h.

4.5.3.1.3.

The technical requirements are fulfilled if the stabilised speeds lie within the following boundaries:

(a) urban speed limit: 45 km/h ≤ stabilised speed ≤ 50 km/h;

(b) inter urban speed limit: 75 km/h ≤ stabilised speed ≤ 80 km/h; and

(c) motorway speed limit: 125 km/h ≤ stabilised speed ≤ 130 km/h.

4.5.3.2.

SCF response test procedure

4.5.3.2.1

The test procedure specified in point 4.5.3.2.2 shall be performed at the following urban test speed limit of 50 km/h, with an initial speedometer speed between 70 km/h and 79 km/h and an initial speed limit of 80 km/h.

4.5.3.2.2.

The subject vehicle shall be driven with an activated SCF at a constant speed within the initial speedometer speed range and the perceived speed limit shall be set to the initial speed limit so that no SCF intervention is active. The perceived speed limit shall then be set to the test speed limit and the vehicle shall continue to be driven at a constant speed within the initial speedometer speed range long enough to initiate an SCF intervention.

4.5.3.2.3.

The technical requirements are fulfilled if an SCF intervention is initiated no later than 1.5 seconds after the vehicle’s perceived speed limit was set to the test speed limit, taking into account the time or distance allowed for the perceived speed limit determination after passing the relevant road sign.

4.5.3.3.

SCF deactivation test procedure.

4.5.3.3.1.

The test procedure specified in point 4.5.3.3.2. shall be performed at the urban speed limit with an initial speedometer speed ≤ 35 km/h and a test speed limit of 50 km/h.

4.5.3.3.2.

The subject vehicle shall be driven with a deactivated SCF within the initial speedometer speed range. The perceived speed limit shall be set, or attempted to be set, to the test speed limit. The vehicle shall then be accelerated, without applying a positive override action, for well in excess of 1.5 seconds and subsequently kept at a relatively stable speed once the test speed limit has been exceeded by a significant margin.

4.5.3.3.3.

The technical requirements are fulfilled if no SCF intervention is initiated and no visual, acoustic or haptic speed limit warning is issued.

4.5.3.4.

SCF override test procedure.

4.5.3.4.1.

The test procedure specified in point 4.5.3.4.2. shall be performed at the following urban test speed limit of 50 km/h, with an initial speedometer speed ≤ 35 km/h and the final speedometer speed ≥ 65 km/h.

4.5.3.4.2.

The subject vehicle shall be driven with an activated SCF within the initial speedometer speed range. The perceived speed limit shall be set to the test speed limit. The vehicle shall then be accelerated, without applying a positive override action, until an SCF intervention is initiated. While the intervention is active, a positive override action as specified by the vehicle manufacturer shall be applied to accelerate the vehicle to the final speedometer speed range. The vehicle shall then be decelerated to a speedometer speed below the test speed limit and accelerated again, without applying a positive override action, until an SCF intervention is initiated.

4.5.3.4.3.

The technical requirements are fulfilled if the following conditions are complied with:

(a) the SCF intervention is temporarily suspended when the positive override action is applied, so that the vehicle can be accelerated smoothly and not abruptly to the final speedometer speed; and

(b) an SCF intervention is initiated during the subsequent acceleration.

4.6.

The test procedures of points 4.1., 4.2., 4.4. and 4.5 may be combined to demonstrate compliance with the requirements in a more efficient manner, with the agreement of the technical service.

5.

Driving scenarios, provisions for limitations and ISA system performance.

5.1.

The observation sensor of the speed limit determination system that is used to assess real-world road signs (e.g. camera) shall not be required to observe more than the forward field of vision of the driver through the motor vehicle’s front windscreen (or a reasonable alternative field as agreed between the vehicle manufacturer, technical service and type-approval authority when the vehicle is not fitted with a front windscreen), as determined using ambinocular vision, the eyes being at the driver’s ocular points as defined in UN Regulation No 46 5 . Any visibility obstruction due to structure below the observation sensor (e.g. bonnet) may be disregarded if this is located below a plane declining forward 4° below the horizontal, starting from the ocular points of the driver. The vehicle manufacturer may demonstrate compliance on the basis of documentation.

5.2.

In order to improve the ISA system performance, the observation field of view may shift as a function of e.g. steering input, vehicle trajectory, use of direction indicators and/or anticipation by predictive systems.

5.3.

For the purpose of calculating the true positive distance ‘TP_D’, the following applies to parts of the test route where the applicable speed limit is determined from passing events of road signs as included in the catalogue of road signs in Annex II, for the category of vehicle to be approved.

5.3.1.

A sign passing event shall not be taken into account when the related sign is partly obstructed (e.g. tree leaves, parked vehicles) or clearly not positioned perpendicularly in relation to both the ground level and the road side or otherwise in an incorrect orientation (e.g. rotated), unless requested by the manufacturer.

5.3.2.

Where the related sign is missing or positioned ambiguously in terms of location to an extent that a normal driver travelling on the relevant road section for the first time would be uncertain to whether or not it applies to that driver, as checked and agreed by the technical service for each instance, the sign passing event shall not be taken into account, unless requested by the manufacturer.

5.3.3.

Where a sign or multiple signs are conveying ambiguous, additional, complementary or diverging information in terms of applicability to vehicle categories, technically permissible maximum laden mass, vehicle dimensions, time of day, weather conditions, adjacent lanes or direction of travel, as checked and agreed by the technical service for each instance, the sign passing event shall not be taken into account, unless requested by the manufacturer.

5.3.4.

A particular false positive detection event may be omitted from the calculations, subject to the agreement by the technical service for each individual case, where a stationary non-applicable road sign was displayed in a very realistic or life-like manner.

5.3.5.

When, within 12 months before the type-approval test, a change occurred in a Member State as regards the applicable speed limit or traffic rule linked to an implicit speed limit sign, or a new sign is introduced, as included in the catalogue of signs in Annex II at time of the type-approval test of the vehicle or STU, the sign passing event shall not be taken into account, unless requested by the manufacturer.

5.3.6.

The distances, where any condition referred to in points 5.3.1. to 5.3.5. applies, shall not be taken into account for the performance metric calculation driven distances d_total and d_correct, as specified in point 4.3.2. However, although the above sign passing events shall not be taken into account, any correct perceived speed limit determination events and associated distance driven may be taken into account on the request of the manufacturer, on case-by-case basis, when the system outperforms these provision, especially in the case where manufacturers employ a combination of an optical observation sensor + GNSS based location determination system + digital maps, being the preferred option with the greatest reliability.

5.4.

The system shall retain the perceived speed limit or information in accordance with point 3.4.1.3., even after re-activation of the vehicle master control switch, unless the system can normally determine the perceived speed limit using relevant system inputs (e.g. electronic map data) when the motor vehicle enters or starts driving on a public road.

5.5.

System logic and strategies.

5.5.1.

The manufacturer may design the intelligent speed assistance system to incorporate a logic or strategy anticipating a change of speed limit, taking into account other vehicles’ movements, merging traffic lanes, crossing of road markings, traffic lights, intersections, speed bumps and pedestrian crossings.

5.5.2.

In the case that the system relies on machine learning, or similar, this shall be duly taken into account when assessing the real-world driving reliability. The technical service shall in such case permit a pre-conditioning of the vehicle in accordance with the manufacturer’s specifications that may be in excess of 100 km as laid down in point 4.1.1.3., as long as it is deemed reasonable. It shall however be prohibited that the preconditioning takes place on any part of the test drive route as determined and agreed in accordance with points 3.4.2.4.3. and 4.3.1.

5.6.

For the purpose of conformity of production and market surveillance testing, the manufacturer, technical service and national authorities shall consider the most recent available system updates at the time of testing, when made available in accordance with point 3.4.2.4.5.2.

5.6.1.

When, within 12 months before the test, an update of the catalogue of signs in Annex II reflected a change that occurred in a Member State as regards the applicable speed limit linked to a specific implicit speed limit sign that was included in the catalogue at time of the type-approval of the vehicle or STU, the sign passing event shall not be taken into account unless requested by the manufacturer.

5.6.2.

Any expansion of the catalogue of signs in Annex II in terms of additional implicit signs that were not included at time of the type-approval of the vehicle or STU, shall not be taken into account for the purpose of conformity of production and market surveillance testing unless when requested by the manufacturer.

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