Document ID: chunk:federal_register_of_legislation:F2021L01519:front:0:p9
Version: federal_register_of_legislation:F2021L01519
Segment Type: other
Provision Reference: 
Character Range: 25718–28291

However, in case the collision cannot be anticipated in time to give a collision warning 0.8 seconds ahead of an emergency braking a collision warning shall be provided as specified in paragraph 5.5.1. and shall be provided no later than the start of emergency braking intervention.

              The collision warning may be aborted if the conditions prevailing a collision are no longer present.

              This shall be tested according to paragraphs 6.4. and 6.5.

              5.2.1.2. Emergency braking

              When the system has detected the possibility of an imminent collision, there shall be a braking demand of at least 5.0 m/s² to the service braking system of the vehicle.

              The emergency braking may be aborted if the conditions prevailing a collision are no longer present.

              This shall be tested in accordance with paragraphs 6.4. and 6.5. of this Regulation.

              5.2.1.3. Speed range

              The system shall be active at least within the vehicle speed range between 10 km/h and 60 km/h and at all vehicle load conditions, unless deactivated as per paragraph 5.4.

              5.2.1.4. Speed reduction by braking demand

              In absence of driver's input which would lead to interruption according to paragraph 5.3.2., the AEBS shall be able to achieve a relative impact speed that is less or equal to the maximum relative impact speed as shown in the following table:

                  (a) For collisions with unobstructed and constantly travelling or stationary targets;

                  (b) On flat, horizontal and dry roads;

                  (c) In maximum mass and mass in running order conditions;

                  (d) In situations where the vehicle longitudinal centre planes are displaced by not more than 0.2 m;

                  (e) In ambient illumination conditions of at least 1000 Lux without direct blinding sunlight;

                  (f) In absence of weather conditions affecting the dynamic performance of the vehicle (e.g. no storm, not below 0°C); and in absence of extreme driving conditions (e.g. harsh cornering).

               It is recognised that the performances required in this table may not be fully achieved in other conditions than those listed above. However, the system shall not deactivate or unreasonably switch the control strategy in these other conditions. This shall be demonstrated in accordance with Annex 3 of this Regulation.

       Maximum relative Impact Speed (km/h) for M1 vehicle*

Relative Speed  Stationary/ Moving
(km/h)