Cdl combination vehicle exm, study gide and prac Study guides, Study notes & Summaries

CDL COMBINATION VEHICLE EXAM, STUDY GUIDE AND PRACTICE EXAM ACTUAL EXAM DETAILED QUESTIONS AND CORRECT ANSWERS ALREADY GRADED A+. Before a drive, ensure that air flows to all trailers by: - ANSWER- Opening the rear shutoff valves and listening for escaping air. Test the tractor protection valve by: - ANSWER- Releasing air with the brake pedal. Pull out the trailer air supply control to test: - ANSWER- The trailer emergency brakes. To prevent a rollover, a driver should: - ANSW...