the converter dolly air tank drain valve should be
For emergency braking you should: You are doing a walk around inspection of a double or triple trailer rig. C. add "one car length for every 10 mph", Fundamentals of Engineering Economic Analysis, David Besanko, Mark Shanley, Scott Schaefer, Incidental Motions & Motions that Bring a Que. If loading fails, click here to try again. Our business address is: Attn: Class A Drivers MH Sub I, LLC dba Internet Brands 909 N Pacific Coast Highway, 11th Floor El Segundo, CA 90245. If your tanks have automatic drains, they will keep most moisture out, but you should still open the drains to make sure. You should keep at least _____ seconds of space ahead of you: You are driving with double trailers and must use your brakes to avoid a crash. Closed, free, 8. The puzzle: At the far left edge, the plates are in contact, so the path length difference between rays 222 and 333 is zero. The front trailer in a set of double trailers is most likely to turn over due to the Crack-the-Whip effect. Which of these statements about the handling of doubles and triples is true? You are driving with double trailers and must use your brakes to avoid a crash. You should NOT: You are driving a set of doubles and a set of trailer wheels goes into a skid. Which is most likely to tip over: To prevent trailers from rolling over, you must steer gently and go slowly around corners, on ramps, off ramps and curves. Some areas of concern are discussed below. Chock the tires, park on level ground and charge the trailer air tank if it does When you do this, you should hear: C. use controlled or stab braking, The best way to stop any skid is to: This has the same value as the %%PERCENTAGE%% Variable on the Final Screen. This will let the rear wheels roll again and keep the rear wheels from sliding. There are more things that can go wrong, and doubles/triples are less stable than other commercial vehicles. Also, this page requires javascript. More driving knowledge, questions and answers, online practice tests for obtaining a drivers . Nothing will happen, but an in-cab warning indicator will let you know about the problem, It will cause the tractor protection valve to close and the trailer emergency brakes to come on, It will cause the tractor protection valve to open and the trailer emergency brakes to come on, When you try to put the service brakes on, air will quickly leak and will lower the air tank pressure, possibly activating the trailer emergency brakes, The emergency brakes will come on automatically as soon as a major leak occurs, Nothing, but braking power will be reduced, Air pressure will quickly leak away, even if you are not using the service brakes, Using a combination of the emergency air line and the service air line, Supply air will be sent to the service line instead of going to charge the trailer air tanks which means the trailer spring brakes will not release, Newer vehicles automatically detect if the lines are crossed and will auto-correct itself, Air will continue filling the air holding tanks until the tanks rupture from excessive pressure, Supply air will cause all brakes to release and the truck will roll freely without any braking ability, Trailers typically do not have their own air tanks, Designed to turn off the truck engine when a brake failure occurs, Used in the service and supply air lines at the back of trailers used to tow other trailers, Placed at each trailer spring brake and are designed to engage the emergency brakes when air pressure becomes too high, The yellow and red air control knobs located in the cab of a truck, Used to secure the trailer kingpin to the tractor 5th wheel, Caps which cover the valve stems on tires, A name for the yellow and red air valves in the cab of a truck, Coupling devices used to connect the service and emergency air lines from the truck or tractor to the trailer, Email Updates When New Articles Are Posted. Use only the trailer brakes C The converter dolly air tank drain valve on coupled double/triple trailers should be: Closed. You must check that all shut-off valves are in the open position except the ones at the back of the last trailer, which must be closed. Join 50,000+ users around America to get your Commercial Driver License today! You should be sure the converter dolly air tank drain valves are _______ & the pintle hook is __________. Any vehicle required by federal regulations to be placarded while transporting hazardous materials. A. allow "much more space" than is needed for ideal driving conditions If the fifth wheel on a coupling is too far forward, the tractor frame may hit? Converter dolly air tank drain valve: CLOSED Air lines supported and glad hands properly connected. The Doubles and Triples written CDL Exam is required for your doubles and triples endorsement. C Calculate the Mach number at section 2. C. back up slightly and make a visual check of the coupling, You are driving with double trailers and must use your brakes to avoid a crash. open the shut-off valves at the rear of the first trailer and close the shut-off valves at the rear of the second trailer, enclose converter dolly air tank drain valves Each trailer and converter dolly has one or more air tanks. While inspecting your converter dolly coupling, you should make sure there is _______ between the upper and lower fifth wheel. The driver will be required to complete this requirement in three eight hour shifts. What should you check for when inspecting a converter dolly? Open. Doubles and triples are more likely to turn over than other combination vehicles because of the "crack- the-whip" effect. The dolly tow bar may fly away, possibly causing panic, and making it very difficult Always test the trailer brakes before driving with the hand valve or by pulling the air supply (tractor protection valve) control. You must steer gently when pulling trailers. C. closed; unlatched, Which of these will result in the best control on a curve? You shouldn't stop braking. What three methods can you use to secure a second trailer before coupling? and possible answers include: open, free or closed, latched or closed, free or open, latched from TruckersDouble & Triple Trailer (CDL) Endorsement. Push the brake pedal as hard as you can and hold it there You should be sure the converter dolly air tank drain valves are ____ and the pintle hook is ____. Be sure air-lines are supported and glad hands are properly connected. When coupling, be sure to couple the proper glad hands together. We are here to help. converting it into two trailers, A coupling device of three or four axles and a fifth wheel by which a semitrailer can Optional: Leave your email address if you would like a reply: When inspecting doubles or triples, in what position should the air shut-off valves be in? Open the emergency line shut-off valve at the rear of the last trailer. A 0000002636 00000 n Any vehicle, regardless of size, designed to transport 16 or more persons, including the driver. None Seriously! You are driving with more than one trailer. the converter dolly air tank drain valve on couple double/triple trailers should be: 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 truckers workspace is a small moving office Read More. This has the same value as the %%TIME_USED%% Variable on the Final Screen. Becoming A Truck Driver is a dream we've all pondered at some point in our lives. You should keep at least ___ seconds of space ahead of you. When does the Driver's manual say you should disable the steering axle brake? C. posted speed limits on curves are safe for all trucks, Empty trucks: C. open, except the one connected to the rear trailer should be closed, During normal operation the brakes on double and triple trailers are controlled by the: Slow to a safe speed before entering the curve, then coast through the curve. With the hand valve on, you should test the trailer brakes by opening the service line valve at the rear of the rig. HlTo xGf`{iIMh-x||?pbE':X4ZZZRbu7 uvi_RHUkVXBVu{^B3 4e/iw\]RE] YY7i)e V*h(++WQ-]Xm9c5yU6BS" 5HiL,[b)ee:t/ )%BVGpU7T\ZJD Therefore, look far ahead so you can slow down or change lanes gradually when necessary. All rights reserved 2022 TestPermit.com, CDL Doubles and Triples Test Question and Answers, Divided Highway Sign: Meaning, Quiz Definition, Example, Shape, Location, Color, Narrow Bridge Sign: Meaning, Quiz Definition, Example, Shape, Location, Color, STOP Sign 2023 Meaning, Quiz Definition, Example, Shape, Location, Color, Crossbuck Sign: Meaning, Definition, Example, Shape, Location, Color, Georgia CDL Permit Practice Test 2023 Study Guide [PDF], Georgia Motorcycle Permit Test 2023 with Study Guide [PDF], Georgia Permit Test 2023 (DDS Practice Test UPDATED), Georgia ADAP Practice Test 2023 Questions Answers Online, Ohio CDL Permit Practice Test 2023 Study Guide [PDF], Ohio Motorcycle Permit Test 2023 Study Guide [PDF]. 0000008894 00000 n You should look into the back of the fifth wheel on a dolly to see if it is locked onto the kingpin, A safe speed on a curve for a straight truck or a single trailer combination vehicle may be too fast for double or triple trailers. The road is dry and visibility is good. This is CDL Doubles and Triples Test 3in our original Classic Mode. and the converter dolly air tank drain valve should be _____. you should keep atleast __seconds of space ahead of you. kingpin. B They are filled by the emergency (supply) line from the tractor. Allow much more space than is needed for ideal driving condition. Follow the procedures described later in this section. The service air line is only used to control the service brakes (when you press on the brake pedal or use the trailer hand-valve). All other trailer air functions use the emergency line. They are filled by the emergency (supply) line from the tractor. A. closed; latched They are filled by the emergency (supply) line from the tractor. Each trailer and converter dolly has one or more air tanks. B. slightly raised Visually check to make sure that the lead trailer is slightly higher than the center of You will not be tested on uncoupling twins unless you want to get a double/triple trailer endorsement on your license. A A 360 degree area of awareness is They provide the air pressure used to operate trailer brakes. Usually need a glad hand converter Should the shut-off valves on the trailers be open or closed on a set of double trailers? For emergency braking you should: which of these statements about emergency steering is true?