Class 1 Practice
Results
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#1. As part of your pre-trip inspection of a combination vehicle with air brakes and one trailer, you should make sure that the air-loss rate per minute is not greater than
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