Air Break Practice Test
Results
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#1. When you test the system air-loss rate, the maximum acceptable air-loss rate per minute after the initial drop is ________ except for vehicles with two trailers.
In British Columbia, the maximum acceptable leakage rates per minute are 28 kPa (4 psi) for single vehicles (buses, straight trucks and bobtail tractors) and tractor-trailers with one trailer, and 41 kPa (6 psi) for tractor-trailers with two trailers. If the leakage rate is higher, check for leaks and correct them.