Recent interest in reestablishing heavy vehicle stopping distance requirements resulted in the need to evaluate the braking performance capability of current vehicles. The report describes testing to determine straight line stopping capability of two single unit trucks and six truck tractors. The single unit trucks were tested empty and fully loaded while the truck tractors were tested bobtail, with an empty trailer and with a fully loaded trailer. Tests were conducted to determine the effect of automatic front axle limiting valves (ALV), bobtail proportioning systems (BPS) and antilock braking systems (ABS). All tests were straight line stops from 60 mph on a dry concrete surface.
NHTSA's Heavy Duty Vehicle Brake Research Program Report No. 9. Stopping Distances of 1988 Heavy Vehicles
1990
38 pages
Report
No indication
English
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