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If there is a trailer 4. On double and triple combinations, you must make sure that which of these is secure? To check if the converter dolly is securely coupled to the rear trailer you should: Pull gently against the pin of the second trailer. A full trailer behind a truck A C To do this without wheels chocks you should: Supply air to the trailer air system with the tractor and then disconnect the emergency line. Use only the trailer brakes Which of these is NOT a good thing to do when driving on slippery roads? 2023 WV Doubles - Triples CDL Practice Test 1 - CristCDL.com A Otherwise, the dolly tow bar may fly up, possibly causing injury and making it very difficult to re-couple. What is a converter dolly? In order to receive your Doubles and Triples endorsement, it is required that you pass the state's official CDL written Knowledge exam. and ensuring it is secure. Which is most likely to tip over: Please wait while the activity loads. A vehicle transporting hazardous materials is required to display placards where? You will speak with recruiters today. Locking jaws closed on There is a school zone ahead. Delivering to. Be certain you are clear at the sides before changing lanes. [California Commercial Driver Handbook] The weight of a truck: Is a major factor affecting stopping distance. By clicking on "Sign Up", you agree to our Terms of Use and Privacy Policy. B. the emergency line valve open and release air If you have traffic on both sides of your vehicle and something is blocking your lane, a move to the right still be best. Never, 9. open, closed, closed: Term. When you do this, you should hear: Ais escape from the open valve. You will speak with recruiters today. Park the rear trailer against another trailer, chock the tires and lock the trailer rear trailer. Dobles - Triples Pruebas de prctica 3 - NJ 2023 - CristCDL.com 1/2 to 3/4 of an inch 0000003240 00000 n Which f these will result in the best control on curves? Clean the couplers and rubber seals before a connection is made. To prevent trailers from rolling over, you must steer gently and go slowly around corners, on ramps, off ramps and curves. When turning a double or triple at an intersection, the turn often cannot be completed without swinging wide. The total number of questions. When inspecting a converter dolly What should you check for? What three methods can you use to secure a second trailer before coupling? you are doing a walkaround inspection of a double or triple trailer rig. How do you know if your converter dolly is equipped with antilock brakes? Connect the Converter Dolly to the Rear Trailer: Test the coupling by pulling against the pin of the second semitrailer. D Safety chains should be secured to trailer(s). None of the above, 2. The number of correct answers. You are doing a walkaround inspection of a double or triple trailer rig. This has the same value as the %%PERCENTAGE%% Variable on the Final Screen. B 3. A major leak in the emergency line will cause the tractor protection valve to close and the trailer emergency brakes to come on. Their drawbars differentiate them. You should keep at least _____ seconds of space ahead of you. A. air escape from the open valve The road is dry, and visibility is good. What is a converter dolly? Which is most likely to tip over: