On August 1, 2011 a new air brake standard for three-axle tractors with Gross Vehicle Weight Ratings (GVWRs) up to 59,600 lbs. took effect. This rule applies to tractors invoiced after August 1, 2011.
Brake troubles often remain invisible until the problem shows up in an unusual circumstance, such as a full-pressure panic stop, or a situation where a fast release is needed, but the brakes just ...
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