Description / Abstract:
This SAE Recommended Practice establishes performance guidelines
of the air reservoir systems used on trucks, towing trucks,
truck-tractors, trailers, and converter dollies with GVWRs over 10
000 lb designed to be used on the highway.
NOTE: Compliance with this document does not guarantee
compliance with the air reservoir requirements of FMVSS
121.
Purpose
The purpose of this document is to establish a minimum storage
capacity for highway-type trucks, buses, trailers, and converter
dollies which use compressed air to actuate or transmit actuation
power to the foundation brakes. A vehicle's air reservoir capacity
is quantified by its ability to provide a brake application
pressure which is adequate to stop the vehicle within the emergency
brake stopping distances specified in Table II of FMVSS 121, after
seven full brake applications with the air compressor disabled.