Combination vehicle - Study guides, Class notes & Summaries

CDL Combination Vehicle Practice Test Questions & Answers Latest Updated 2024/2025. You supply air to the trailer tanks by: A. pushing in the trailer air supply valve B. pulling out the trailer air supply valve C. connecting the service air line 2. Loss of air pressure in the emergency line causes: A. the relay valves to close B. an increase in air pressure to the service line C. the trailer's emergency brakes to come on 3. A tractor with a __ trailer requires the shortest amount of sto...

CDL EXAM - Combination Vehicle Exam Question With Verified Answers You can roll the last trailer of triples ____times as easily as a five-axle tractor. a. 2 b. 3.5 c. 5 d. 5.5 e. all the above - answerb. 3.5 ____ of truck driver deaths in crashes are the result of truck rollovers. a. fewer than one-fourth b. more than one-fourth c. more than half d. more than three-fourths - answerc. more than half Fully loaded rigs are ____ likely to roll over in a crash compared to empty rigs. a....

CDL COMBINATION VEHICLES 2024/2025 EXAM PRACTICE WITH 200 QUESTIONS AND CORRECT ANSWERS (100% CORRECT ANSWERS)/ CDL-COMBINATION VEHICLES EXAM PREP 2024 (NEW!)

You are coupling a semi-trailer to your tractor but have not yet backed under, the trailer is at the right height when: - It will be raised slightly when the tractor is backed under it. You should not back a tractor under a trailer until the whole air system is: - At normal pressure. Which part of the kingpin should the locking jaws close around? - The shank. When you get ready to back under the semi-trailer you should line up: - Directly in front of the trailer. How should you test ...

CDL Combination Vehicle Practice Test Questions & Answers Latest Updated 2024/2025 (100% Correct) You supply air to the trailer tanks by: A. pushing in the trailer air supply valve B. pulling out the trailer air supply valve C. connecting the service air line 2. Loss of air pressure in the emergency line causes: A. the relay valves to close B. an increase in air pressure to the service line C. the trailer's emergency brakes to come on 3. A tractor with a __ trailer requires the shortest...

What two things are important to prevent rollover? (6.1.1) - 1. Keep cargo as close to the ground as possible 2. Drive slowly around turns When you turn suddenly while pulling doubles, which trailer is most likely to turn over? (6.1.2) - The rear most trailer What is the "crack-the-whip" effect? (6.1.2) - When you make a quick lane change or sudden movement of your steering wheel, the rear trailer tends to swing out. The force of the rear trailer becomes amplified, causing it to roll ...

NC CDL Combination Vehicles Exam Questions with 100% Correct Answers | Verified |Updated

CDL COMBINATION VEHICLE PRACTICE TEST LATEST UPDATE A tractor with a(n) ________ trailer requires the shortest amount of stopping distance . 1. empty 2. fully loaded 3. lightly loaded - CORRECT ANSWER fully loaded The air leakage rate for a combination vehicle ( engine off, brakes on) should not be more than _____ psi per minute . 1. 4 2. 6 3. 2 - CORRECT ANSWER 4 If you do not do the final air brake check for air leaks and fix them before driving, 1. you cou...

CDL COMBINATION VEHICLE EXAM, PRACTICE EXAM AND STUDY GUIDE NEWEST 2024 ACTUAL EXAM QUESTIONS AND CORRECT DETAILED ANSWERS

You supply air to the trailer tanks by: A. pushing in the trailer air supply valve B. pulling out the trailer air supply valve C. connecting the service air line 2. Loss of air pressure in the emergency line causes: A. the relay valves to close B. an increase in air pressure to the service line C. the trailer's emergency brakes to come on 3. A tractor with a __ trailer requires the shortest amount of stopping distance. A. empty B. lightly loaded C. fully loaded 4. Which of these sta...