[Code of Federal Regulations]
[Title 49, Volume 5]
[Revised as of October 1, 2002]
From the U.S. Government Printing Office via GPO Access
[CITE: 49CFR581.7]

[Page 952-953]
 
                        TITLE 49--TRANSPORTATION
 
                            OF TRANSPORTATION
 
PART 581--BUMPER STANDARD--Table of Contents
 
Sec. 581.7  Test procedures.

    (a) Longitudinal impact test procedures. (1) Impact the vehicle's 
front surface and its rear surface two times each with the impact line 
at any height from 16 to 20 inches, inclusive, in accordance with the 
following procedure.
    (2) For impacts at a height of 20 inches, place the test device 
shown in Figure 1 so that Plane A is vertical and the impact line is 
horizontal at the specified height.
    (3) For impacts at a height between 20 inches and 16 inches, place 
the test device shown in Figure 2 so that Plane A is vertical and the 
impact line is horizontal at a height within the range.
    (4) For each impact, position the test device so that the impact 
line is at least 2 inches apart in vertical direction from its position 
in any prior impact, unless the midpoint of the impact line with respect 
to the vehicle is to be more than 12 inches apart laterally from its 
position in any prior impact.

[[Page 953]]

    (5) For each impact, align the vehicle so that it touches, but does 
not move, the test device, with the vehicle's longitudinal centerline 
perpendicular to the plane that includes Plane A of the test device and 
with the test device inboard of the vehicle corner test positions 
specified in Sec. 581.7(b).
    (6) Move the test device away from the vehicle, then release it to 
impact the vehicle.
    (7) Perform the impacts at intervals of not less than 30 minutes.
    (b) Corner impact test procedure. (1) Impact a front corner and a 
rear corner of the vehicle once each with the impact line at a height of 
20 inches and impact the other front corner and the other rear corner 
once each with the impact line at any height from 16 to 20 inches, 
inclusive, in accordance with the following procedure.
    (2) For an impact at a height of 20 inches, place the test device 
shown in Figure 1 so that Plane A is vertical and the impact line is 
horizontal at the specified height.
    (3) For an impact at a height between 16 inches and 20 inches, place 
the test device shown in Figure 2 so that Plane A is vertical and the 
impact line is horizontal at a height within the range.
    (4) Align the vehicle so that a vehicle corner touches, but does not 
move, the lateral center of the test device with Plane A of the test 
device forming an angle of 60 degrees with a vertical longitudinal 
plane.
    (5) Move the test device away from the vehicle, then release it to 
impact the vehicle.
    (6) Perform the impact at intervals of not less than 30 minutes.
    [GRAPHIC] [TIFF OMITTED] TC01AU91.197
    

[42 FR 24059, May 12, 1977, as amended at 42 FR 38909, Aug. 1, 1977]