Date of installation on motor vehicle | Length measured on centerline of longitudinal axis (inches) | Width measured on centerline of transverse axis (inches) | Height measured from highest point of top of mattress (inches)1 |
Before January 1, 1953 | 72 | 18 | 18 |
After December 31, 1952, and before October 1, 1975 | 75 | 21 | 21 |
After September 30, 1975 | 75 | 24 | 24 |
1 In the case of a sleeper berth which utilizes an adjustable mechanical suspension system, the required clearance can be measured when the suspension system is adjusted to the height to which it would settle when occupied by a driver.
49 C.F.R. §393.76