Document ID: chunk:federal_register_of_legislation:F2012C00535:front:0:p10
Version: federal_register_of_legislation:F2012C00535
Segment Type: other
Provision Reference: 
Character Range: 28137–30826

the deformed structure

       5.2. Residual space

        The envelope of the vehicle's residual space is defined by creating a  vertical transverse plane within the vehicle which has the periphery described in Figures 2(a) and 2(c), and moving this plane through the length of the vehicle (see Figure 2(b)) in the following manner:

       5.2.1. the SR point is located on the seat-back of each outer forward or rearward facing seat (or assumed seat position), 500 mm above the floor under the seat, 150 mm from the inside surface of the side wall.  No account shall be taken of wheel arches and other variations of the floor height.  These dimensions shall also be applied in the case of inward facing seats in their centre planes.

       5.2.2. If the two sides of the vehicle are not symmetrical in respect of floor arrangement and, therefore, the height of the SR points are different, the step between the two floor lines of the residual space shall be taken as the longitudinal vertical centre plane of the vehicle (see Figure 2(c));

       5.2.3. the rearmost position of the residual space is a vertical plane 200 mm behind the SR point of the rearmost outer seat, or the inner face of the rear wall of the vehicle if this is less than 200 mm behind that SR point.

        The foremost position of the residual space is a vertical plane 600 mm in front of the SR point of the foremost seat (whether passenger, crew, or driver) in the vehicle set at its fully forward adjustment.

       If the rearmost and foremost seats on the two sides of the vehicle are not in the same transverse planes, the length of the residual space on each side will be different;
       5.2.4. The residual space is continuous in the passenger, crew and driver compartment(s) between its rearmost and foremost plane and is defined by moving the defined vertical transverse plane through the length of the vehicle along straight lines through the SR points on both sides of the vehicle.  Behind the rearmost and in front of the foremost seat's Sr point the straight lines are horizontal.

5.2.5. The manufacturer may define a bigger residual space than is required for a given seat arrangement, to simulate a worst case in a group of vehicle types to allow for future design development.

5.3. Specification of rollover test on a complete vehicle as the basic approval method

        The rollover test is a lateral tilting test (see Figure 3), specified as follows:

       5.3.1. The complete vehicle is standing on the tilting platform, with blocked suspension and is tilted slowly to its unstable equilibrium position.  If the vehicle type is not fitted with occupant restraints it will be