Cdl Combination Test Cheat Sheet - Lightly loaded, the air leakage rate for a combination vehicle ( engine off, brakes on) should not be more than _____ psi per minute. For those of you going for the class a cdl, you will have to pass the written test covering information on combination vehicles. Time limit varies by state. You need 16 correct answers (80%). Web study with quizlet and memorize flashcards containing terms like a tractor with a (n) ________ trailer requires the shortest amount of stopping distance.
Lightly loaded, the air leakage rate for a combination vehicle ( engine off, brakes on) should not be more than _____ psi per minute. You need 16 correct answers (80%). Web study with quizlet and memorize flashcards containing terms like a tractor with a (n) ________ trailer requires the shortest amount of stopping distance. Time limit varies by state. For those of you going for the class a cdl, you will have to pass the written test covering information on combination vehicles.