Document ID: chunk:federal_register_of_legislation:F2025L00028:front:0:p21
Version: federal_register_of_legislation:F2025L00028
Segment Type: other
Provision Reference: 
Character Range: 60433–63294

likely to influence the results of the test.

              4.3. Mass of the vehicle

              4.3.1. The vehicle to be tested shall have the reference mass as defined in paragraph 2.10. of this Regulation. The mass of the vehicle shall be adjusted to ±1 per cent of the reference mass.

              4.3.2. The fuel tank shall be filled with water to a mass equal to 90 per cent of the mass of a full load of fuel as specified by the manufacturer with a tolerance of ±1 per cent.

               This requirement does not apply to hydrogen fuel tanks.

              4.3.3. All the other systems (brake, cooling, etc.) may be empty; in this case, the mass of the liquids shall be offset.

              4.3.4. If the mass of the measuring apparatus on board of the vehicle exceeds the 25 kg allowed, it may be offset by reductions which have no noticeable effect on the results of the test.

              4.3.5. The mass of the measuring apparatus shall not change each axle reference load by more than 5 per cent, each variation not exceeding 20 kg.

              5. Preparation of the vehicle

              5.1. The side windows at least on the struck side shall be closed.

              5.2. The doors shall be closed, but not locked.

              5.2.1. However, in the case of vehicles equipped with an automatically activated door locking system, it shall be ensured that all the side doors are locked before the test.
              5.2.2. In the case of vehicles equipped with an automatically activated door locking system, which is installed optionally and/or which can be de-activated by the driver, one of the following two procedures shall be used at the choice of the manufacturer:
              5.2.2.1. All the side doors shall be locked manually before the start of the test.
              5.2.2.2. It shall be ensured that the side doors on the struck side are unlocked and the side doors on the non-struck side locked before the impact; the automatically activated door-locking system may be overridden for this test.

              5.3. The transmission shall be placed in neutral and the parking brake disengaged.

              5.4. The comfort adjustments of the seats, if any, shall be adjusted to the position specified by the vehicle manufacturer.

              5.5. The seat containing the dummy, and its elements, if adjustable, shall be adjusted as follows:

              5.5.1. The longitudinal adjustment device shall be placed with the locking device engaged in the position that is nearest to midway between the foremost and rearmost positions; if this position is between two notches, the rearmost notch shall be used.

              5.5.2. The head restraint shall be adjusted such that its top surface is level with the centre of gravity of the dummy's head; if this is not possible, the head restraint shall be