CFR > Title 49 - Transportation > SUBTITLE B—Other Regulations Relating to Transportation > CHAPTER V—NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION (Parts 501–599) > PART 587—DEFORMABLE BARRIERS > SUBPART B—Side Impact Moving Deformable Barrier (§587.4 to §587.7-587.10) > 587.6—General description.

587.6—General description.

(a) The moving deformable barrier consists of component parts and component assemblies which are described in drawings and specifications that are set forth in this § 587.6 of this chapter (incorporated by reference; see § 587.5 ).
(b) The moving deformable barrier specifications are provided in the drawings shown in DSL-1278 through DSL-1287, except DSL-1282, and the drawing shown in DSL-1290 (DSL-1278 through DSL-1287, except for DSL-1282, and DSL-1290 are incorporated by reference; see § 587.5 ).
(1) The specifications for the final assembly of the moving deformable barrier are provided in the drawings shown in DSL-1278, dated June 2002.
(2) The specifications for the frame assembly of the moving deformable barrier are provided in the drawings shown in DSL-1281, dated August 20, 1980.
(3) The specifications for the face of the moving deformable barrier are provided in the drawings shown in DSL-1285, dated October 1991, and DSL-1286, dated August 20, 1980.
(4) The specifications for the ballast installation and details concerning the ballast plate are provided in drawings shown in DSL-1279 and DSL-1280, both dated August 20, 1980.
(5) The specifications for the hub assembly and details concerning the brake are provided in drawings shown in DSL-1283, dated October 1991.
(6) The specifications for the rear guide assembly are provided in drawings shown in DSL-1284, dated August 20, 1980.
(7) The specifications for the research axle assembly are provided in drawings shown in DSL-1287, dated October 1991.
(8) The specifications for the compliance axle assembly are provided in drawings shown in DSL-1290, dated October 1991.
(c) In configuration 2 (with two cameras and camera mounts, a light trap vane, and ballast reduced), the moving deformable barrier (crabbable axle), including the impact surface, supporting structure, and carriage, weighs 3,015 pounds, has a track width of 74 inches, and has a wheelbase of 102 inches.
(d) In configuration 2, the moving deformable barrier has the following center of gravity:
X=44.2 inches rear of front axle
Y=0.3 inches left of longitudinal center line
Z=19.7 inches from ground.
(e) The moving deformable barrier has the following moment of inertia:

Code of Federal Regulations

Pitch=1669 ft-lb-sec2

Code of Federal Regulations

Roll=375 ft-lb-sec2

Code of Federal Regulations

Yaw=1897 ft-lb-sec2
[55 FR 45779, Oct. 30, 1990; 56 FR 47011, Sept. 17, 1991, as amended at 57 FR 7558, Mar. 3, 1992; 68 FR 44472, July 29, 2003]