A Multiple Trailer Train Combination Consisting of a Tractor and Two

question 75

Multiple Choice

A multiple trailer train combination consisting of a tractor and two trailers is spec'd to haul close to maximum loads.Throughout axles in the rig,where would you find the lowest relay valve crack pressures if the rig is spec'd for balanced braking?

• A) rear axles on the pup trailer
• B) rear axles on the lead trailer
• C) tractor drive axles
• D) tractor steer axle

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