U.S. DEPARTMENT OF TRANSPORTATION - SaferCar.gov

SINCAP MDB - 7
A lateral guidance system is required to assure that the MDB shall impact the side of the
target or test vehicle at the designated angle even though the MDB is crabbed to an
angle of 27 ± 1 degrees with the forward line of motion. It must also ensure that the MDB
impacts the test vehicle within ± 51 mm (2 in) of the vertical impact reference line as
specified later in this procedure (Section 9.4A).
E. MOVING DEFORMABLE BARRIER
The Contractor shall provide a moving deformable barrier as specified in Part 587 and
Figure 1. Dimensions of the MDB and a summary of MDB & honeycomb face details are
provided below:
(1) The total weight of the MDB with impact face shall be 1,361 ± 4.5 kg [1,356.5 kg -
1,365.5 kg). The total configured weight of the MDB with impact face, two
cameras, camera mounts, light trap vane, and ballast reduced shall be 1,367.6
kg as stated in 49 CFR 587.6.
(2) The overall length of the MDB with impact face must be 4,115 ± 25 mm.
(3) The overall length of the MDB, excluding impact face, must be 3,632 mm
(includes 50.8 mm thick mounting block).
(4) The overall width of the framework carriage must be 1,251 mm.
(5) The tracking width (centerline to centerline of front or rear wheels) must be 1,880
mm.
(6) The wheelbase for the framework carriage must be 2,591 ± 25 mm.
(7) The inertial properties of the MDB (with two cameras and camera mounts and a
light trap vane and ballast reduced) are specified. The center of gravity (CG)
shall be located:
X = 1,123 ± 25 mm rear of front axle
Y = 7.6 ± 25 mm left of longitudinal centerline
Z = 500 ± 25 mm from ground
Moments of inertia (tolerance 5% for testing purposes) are as follows:
Pitch = 2,263 kg-m 2
Roll = 508 kg-m 2
Yaw = 2,572 kg-m 2
(8) The shape of the honeycomb impact face is given by the following
measurements:
Width = 1,676 ± 6 mm
Height = 559 ± 6 mm
Ground Clearance = 279 ± 3 mm
Depth at Bumper Height = 483 ± 6 m
Depth at upper impact face = 381 ± 6 mm
(9) The force-deflection properties (crush strength) for honeycomb impact face shall
be 310 ± 17 kpa and 1,690 ± 103 kpa for the bumper.