CDL Combination Vehicles Practice Test #2

Welcome future truck drivers! The following is the CDL Combination Vehicles Practice Test #2. Simply click in your answer (A,B,C, or D) to each CDL practice test question. When you're done, check your score and the results. You can reset the test and retake it as many times as you want.

CDL Combination Vehicles Practice Test #2 Start Now 1. When coupling the trailer, back up slowly until... A The load shifts inside the trailer B The fifth wheel just touches the trailer C You can see the rear wheels in the mirror D You hit the front of the trailer with the tractor 2. The earliest way to notice a trailer skid is... A By feeling the pull on your steering wheel B By feeling a jerking in the back of the tractor C By seeing it in your mirrors D By hearing the squeal from the tires 3. A king pin is... A The pin which locks the air brake lines together B A pin which locks the trailer to the tractor on the fifth wheel C A pin which holds the wheels on the axles D The pin a driver receives for safe driving 4. The trailer should be lowered so that... A the trailer is far above the fifth wheel B the tractor strikes the nose of the trailer C you can use the landing gear to make any adjustments D it's raised slightly when the tractor's backed under it 5.Which of the following steps comes first? A apply the trailer brakes B raise the landing gear C put the transmission in reverse D connect the air supply lines 6. Before you begin coupling... A check the condition of the tractor frame B check your path for hazards C pre-position the fifth wheel D put the spring brakes on 7. The trailer air supply control... A Is a red, triangular-shaped knob B Is a yellow, square knob C Is a red, square knob D Is a red, eight sided knob 8. In order to inspect the coupling you should... A Make sure there is space between the upper and lower fifth wheel B Check that the locking lever is in the open position C Make sure the fifth wheel jaws are open D Use a flashlight if necessary 9. You should crank the landing gear until... A It is six inches off the ground B You can clear railroad tracks C The crank handle is loose D It is as far up as it will go 10. The fifth wheel should be checked to see if... A There is damage or missing parts B It is properly greased C The jaws are open D All of the above 11. A device which connects the service and emergency air lines from the truck to the trailer is called... A Relay switch B Glad hands C Service couplers D Shut off valves 12. The service air line is controlled by... A The pressure applied to the line by the foot brake or the trailer hand brake B The relay valve which connects the trailer air tanks to the trailer air brakes C The relay valve which sends air pressure from the trailer air tank to the trailer brake chambers D All of the above 13. To prevent rollovers, remember to... A Keep the load centered B Keep the load as low as possible C Go slow around turns D All of the above 14. "Off-tracking" occurs when you go around a corner and... A The rear wheels follow a different path than the front wheels B The rear trailer goes off the road C The rear wheels follow the front ones in a straight line D The front of the trailer pulls to the right 15. Large combination vehicles take longer to stop... A When they are empty B When they are loaded C Than bobtail tractors D It takes the same time whether empty or loaded Test Score = Correct Answers: Get My CDL! The New Trucker Career Center CDL Practice Tests Access Page Trucker Country Home Page Click Here to Take the Next Test! Or choose from these additional CDL Practice Tests! CDL General Knowledge Practice Test #1 CDL General Knowledge Practice Test #2 CDL General Knowledge Practice Test #3 CDL General Knowledge Practice Test #4 CDL General Knowledge Practice Test #5 CDL General Knowledge Practice Test #6 CDL General Knowledge Practice Test #7 CDL General Knowledge Practice Test #8 CDL General Knowledge Practice Test #9 CDL General Knowledge Practice Test #10 CDL Hazardous Materials Practice Test #1 CDL Hazardous Materials Practice Test #2 CDL Hazardous Materials Practice Test #3 CDL Hazardous Materials Practice Test #4 CDL Hazardous Materials Practice Test #5 CDL Hazardous Materials Practice Test #6 CDL Hazardous Materials Practice Test #7 CDL Air Brakes Practice Test #1 CDL Air Brakes Practice Test #2 CDL Air Brakes Practice Test #3 CDL Air Brakes Practice Test #4 CDL Air Brakes Practice Test #5 CDL Doubles and Triples Practice Test #1 CDL Doubles and Triples Practice Test #2 CDL Doubles and Triples Practice Test #3 CDL Doubles and Triples Practice Test #4 CDL Doubles and Triples Practice Test #5 CDL Combination Vehicles Practice Test #1 You are now taking Test #2 CDL Combination Vehicles Practice Test #3 CDL Combination Vehicles Practice Test #4 CDL Tank Vehicles Practice Test #1 CDL Tank Vehicles Practice Test #2 CDL Tank Vehicles Practice Test #3 CDL Tank Vehicles Practice Test #4 CDL Tank Vehicles Practice Test #5 Click Here and Get Started Trucking! Go to top of page