the converter dolly air tank drain valve should be

This is CDL Doubles and Triples Test 3in our original Classic Mode. The last trailer in a combination is most likely to turn over. Each trailer and converter dolly has one or more air tanks. B. johnson bar 9. C. if you have traffic on both sides of your vehicle and something is blocking your lane, a move to the right may still be best, To uncouple the rear trailer in a set of doubles, the shut-off valve at the rear of the front trailer 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. That split second that you release the brakes will allow them to match the vehicles road 2022 DE Doubles - Triples CDL Quick Review 1 - CristCDL.com Which of the following will occur? Pintle-eye of dolly in place in pintle hook of trailer (s). B. keep other traffic out of your side space A 360 degree area of awareness is B. you can almost always stop more quickly than you can turn Doubles and triples take up more space than other commercial vehicles. How much space should be between the upper and lower fifth wheels? You should keep at least ____ seconds of space ahead of you. 0000006836 00000 n Each tank has a drain valve on it, and you should drain each tank every day. 2023 WV Doubles - Triples CDL Practice Test 1 - CristCDL.com Before you can supply air to the air tanks of a second trailer you need to: Open the shut-off valves at the rear of the first trailer and close the shut-off valves at the rear of second trailer. When coupling twin trailers, you should _______ the pintle hook and secure the dolly support in the _______ position. Please wait while the activity loads. 9 Questions You Must Ask, Decide if Truck Driving is The Correct Career Path, Do Not Sell or Share My Personal Information. which of these is not a good thing to do when driving on slippery roads? How many different ways of coupling and uncoupling trailer combinations are there? You may not notice a major leak in the service line until you try to put the brakes on. Open the emergency line shut-off valve at the rear of the last trailer. When you go to the rear of the last trailer, what should you do to complete this check? In this order, the shutoff valves at the rear of front trailers, the rear of the last trailer and the converter dolly air tank drain valve should be? B. for doubles and triples, the fifth wheel should be all the way towards the tractor trailer << /Size 59 /Info 20 0 R /Root 22 0 R /Prev 29211 /ID[] >> startxref 0 %%EOF 22 0 obj << /Type /Catalog /Pages 19 0 R >> endobj 57 0 obj << /S 66 /Filter /FlateDecode /Length 58 0 R >> stream Amazon.com: Air Tank Drain Valve C. use stab or controlled braking, Which of these is true? Pull gently against the pin of the second trailer. C. close the shut-off valves at the rear of the first trailer and open the shut-off valves at the rear of the second trailer, To check that the converter dolly is securely coupled to the rear trailer, you should: 27. When does the Driver's manual say you should disable the steering axle brake? D A) one inch of space . New! On double and triple combinations, you must make sure that which of these is secure? 7.3 Inspecting Doubles and Triples = Additional Things to Check During a Walkaround Inspection. C. always keep your vehicle to the left side of your lane, When testing the coupling of double trailers, the landing gear of the rear trailer should be: There are more things that can go wrong, and doubles/triples are less stable than other commercial vehicles. Tractor-trailers are considered combination vehicles. Connect Converter Dolly to Front Trailer Back first semitrailer into position in front of dolly tongue. If there is NPT thumbscrew style design enables easy installation. Why should you check for when inspecting the converter dolly? When turning a double or triple at an intersection, the turn often cannot be completed without swinging wide. How can you be sure you supplied air to a second trailer? Either the front or the rear brakes will not work properly or fully. To do this without wheels chocks you should: Supply air to the trailer air system with the tractor and then disconnect the emergency line. Related Question Question: What does this sign mean? You can test that air is flowing to all trailers by opening? Any trailer, 7. unsafe slow down even further, or better yet, find a safe haven and park until the You shouldn't stop braking. Park the rear trailer against another trailer, chock the tires and lock the trailer 0000010783 00000 n For emergency braking you should: You are doing a walk around inspection of a double or triple trailer rig. The lightest trailer Which of the following must be connected when coupling tractor to trailer or trailer to trailer? When inspecting the air brakes on doubles and triples, you wait for air pressure to reach normal, then push in the red trailer air supply knob. For emergency braking you should: Use controlled or stab braking Converter dollies: Often do not have spring brakes The crack the whip effect that troubles trucks with trailers. Like a trailer, a dolly equipped with ABS will have a yellow indicator light on the left side. 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? If it goes low enough, the trailer emergency brakes will come on. How should the converter dolly air tank drain valve on coupled double Eventually, the air will leak away, and then there will be no brakes. You need to stop braking because it's necessary for you to speed up, When you are in a drive-wheel braking skid, the first thing to do is STOP BRAKING! slow to safe speed before entering, then accelerate slightly through the curve. axle will have spring brakes due to the weight of the unit. 60607. 1. A. air escape from the open valve _______ should be tested with the hand valve but controlled in normal operation with the foot pedal. 0000002446 00000 n fumoto drain valve. DMV Doubles Triples Practice Test | CDL Knowledge Which is most likely to tip over: you should avoid traveling next to others when possible. During normal operation the brakes of the double/triple trailer are controlled by: You are driving at night and you must dim your headlights for traffic. Locking jaws closed on The pressure in the service line is controlled by the brake pedal and the trailer hand brake. The road is dry and visibility is good. That there is some space between the upper and lower fifth wheel. On a triple combination, the shutoff valves on the rear of the last trailer should be? You MUST have air all the way to the back for all the brakes to work. Otherwise, the dolly tow bar may fly up, possibly causing injury and making it very difficult to re-couple. What is a converter dolly? You are doing a walkaround inspection of a double or triple trailer rig. There is no obligation whatsoever. There is a school zone ahead. Should the shut off valves on the rear of the first trailer be open or closed on a set of double trailers? safe speed would be 40 MPH. Air pressure is sent from the air tanks to the brakes by relay valves. While it is general practice to make blue the service line, red the emergency line, and green the electrical line, these colors are not required by any laws or regulations. securely fastened. you are driving a set of doubles and a set of trailer wheels goes in a skid. These valves permit closing the air lines off when another trailer is not being towed. Lock pintle hook. A dolly has lights, air tanks, air relays, air lines, air brakes, ABS, electrical connections, etc. What three methods can you use to secure a second trailer before coupling? To uncouple the rear trailer in a set of doubles, the shut-off valve at the rear of the front trailer should be: Closed. Always unlock the pintle hook with the dolly still under the rear trailer. The converter dolly is an auxiliary axle with a coupling device. allow "much more space than is needed for ideal driving conditions". If you feel B All ABS equipped units If your converter dolly has to be moved over a distance to bring it to your semitrailer, you should? With the hand valve on, you should test the trailer brakes by opening the service line valve at the rear of the rig. 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. When inspecting doubles and triples you must make sure there is air all the way to the back of the last trailer, otherwise what may not work? Double and triple trailers increase not only the operators risk of safety, but also the other motorists around him. Did you know you can fill out one quick form here on TruckingTruth and apply to several companies at once for paid CDL training? Blue is used for the service lines, and red for the emergency (supply) lines. 1/3 For example: If you are traveling 60 MPH and it begins to rain, your suggested speed and start spinning again, in turn stopping your skid, All the listed answers would be correct. coupled to the rear of a tractor-trailer combination forming a double bottom rig, Careful of the wording! How do you know if your converter dolly is equipped with antilock brakes? When uncoupling doubles or triples, what is important to know about unlocking the pintle hook? Please use the form below to contact our customer service or sales team. 0000008187 00000 n 5. the best way to keep brakes from getting too hot while going down long grades is to : go slow and use only light, steady pressure on the brakes, you are driving a 100ft truck with double trailers at 30mph. The shut off valves, when in the open position, allows air to flow out to another trailer. Slow to the safe speed before entering, then accelerate slightly through the curve. The DMV doubles triples practice test will examine your knowledge of pulling double/triple trailers, coupling and uncoupling, inspecting doubles and triples, and checking air brakes. The heaviest trailer Calculate the voltage gain of each. Which of the following is true about loading cargo into double or triple trailers? Doubles and triples are extremely prone to control issues and must be Closed, free, 8. The best way to keep brakes from getting to hot while going down long grades is to: Go slow and use only light, steady pressure on the brakes. Allow more following distance. If you leave this page, your progress will be lost. 0000007487 00000 n When the road is dry Each trailer and converter dolly has one or more air tanks. 3. What does the Commercial Driver Handbook say about how much space you should keep ahead of your truck? A full trailer behind a truck Nothing, the weight of the trailer will keep it in place, 10. Go to Section 4: Other Topics This question is in Section 4: Other Topics of our CDL Test Guide. When you turn with the tractor/triple trailer combination the wheels that off-track (cheat) the most are: You should check trailer height before connecting a converter dolly to a second or third trailer. The number of correct answers. You should be sure the converter dolly air tank drain . Never pull any trailer without visually inspecting the fifth wheel locking bar 10 Remember, the service line is not used unless you depress the brake pedal or use the trailer hand valve. locked . Locking jaws closed on You must steer gently when pulling trailers. Leave the emergency line shut-off valve closed and open the service line valve. 0000004668 00000 n The air lines will rupture How can you test that air flows to all trailers? For emergency braking you should: which of these statements about emergency steering is true? 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]. There are more critical parts to check when you have two or three trailers. The road is dry, and visibility is good. You should be sure the converter dolly air tank drain valves are ____ and the pintle hook is ____. Use the engine brake or speed retarder. CDL Doubles & Triples Practice Test 3 - Classic Mode - Trucker Country 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. recouple. Doubles and triples are more likely to turn over than other combination vehicles because of the "crack- the-whip" effect. If not, there is a problem. B You need to brake in order to regain control. View More Details. Doubles Triples Endorsement Test Flashcards | Quizlet A CDL is required to drive any of the following vehicles: A vehicle with two separate parts - the power unit (tractor) and the trailer. you are driving a 100ft truck eith double trailers at 50mph. The converter dolly air tank drain valve on coupled double and triple trailers should be: Closed. When coupling twin trailers, a converter dolly is. A 1. and ensuring it is secure. Because of this, which of the following vehicle parts is most likely to tip over? 0000001956 00000 n which of these figures shows how the turn should be made, if you want to couple a second trailer to your combination vehicle, secure it by, the trailers spring brakes & wheel chocks. The trailer height is right when: The trailer will be raised slightly when the converter dolly is backed under it. B. allow one vehicle length for every 10,000 lbs of gross vehicle weight When checking the fifth wheel, you should make sure that it has enough? Which of these statements about managing space to the sides is true? kingpin, That there is grease between upper and lower fifth wheel. If one air system is very low on pressure _______. Be more careful in adverse conditions. The application only takes one minute. B The trailer brakes will unlock Always test the trailer brakes before driving with the hand valve or by pulling the air supply (tractor protection valve) control. fifth wheel, so trailer is raised slightly when dolly is pushed under it. The A-dolly has a single drawbar with a single, centered hitching point. Park on level ground, put chock on the tires, and charge the air tank. C Explain why the waves that reflect from the far left edge of the plates in the given figure earlier exhibit destructive interference (zero intensity) at x=0x=0x=0. some large trucks have curved (convex or spot) mirrors. You should avoid traveling next to others when possible. Hazardous materials must be placarded on all four sides of EACH Trailer. A bent or damaged kingpin on a coupling should be? After 15 years on the road I wanted to help people understand the trucking industry and everything that came with the career and lifestyle of an over the road trucker. Make sure pintle hook is latched. 0000007032 00000 n The lighter semitrailer should be in first position behind the tractor. 0000009577 00000 n The rear trailers shut-off valves should be open and the front closed. you are driving on a slippery road during the day. If the air supply in the trailer air tank has leaked away, there will be no emergency brakes, and the trailer wheels will turn freely. the crack-whip effect that triubkes trucks with trailers is most likely to cause a tip over when. The word part ferrit- means: You should keep at least ____ seconds of space ahead of you. When driving a truck with more than one trailer, which trailer should be first behind the truck? When only pulling one trailer, be sure the shut-off valves are all in the fully closed position. Which of these is most likely too occur? 0000005664 00000 n We'll help you make the right choices and prepare for a great start to your trucking career. Watch the wording of the question AND the answers A safe driver will look for all of the above. If youre reading this, youre probably asking yourself, Should I Read More, One aspect of living as a truck driver is that you are constantly away from home and have to purchase all your meals on the road. Close the emergency line shut-off valve at the rear of the trailer. If this activity does not load, try refreshing your browser. Should the shut-off valves on the rear of the last trailer be open or closed? A if you have traffic on both sides of your vehicle and something is blocking your lane, a move to the right still be best. 0000001375 00000 n When you do this, you should hear: The emergency brakes come on whenever the air supply knob is pulled out or the trailer is disconnected. If you're only pulling one trailer, the shut off valves should always be closed or else the air will simply escape out the back of the trailer. The rear trailers shut off valves should be closed and the front open to allow air to the How To Use Cruise Control Effectively As A Truck Driver. Remember however, that is just a suggestion. Locking jaws open 11 A converter dolly is If a converter dolly has spring brakes, you release the brakes by You have connected the converter dolly to the front semitrailer and then connected the rear semitrailer to the converter dolly. Inspecting Doubles And Triples | High Road Online CDL Training the rig will continue moving in a straight line no matter how much the steering wheel is turned. can and will get stuck on a raised railroad crossing. If this lamp is illuminated and does not go out, Doubles and Triples CDL Practice Test - Class A Drivers You should reduce your speed by about _____ on a wet road. Also, this page requires javascript. 2 We've all wondered if the adventure and challenges of life on the open road would suit us better than the ordinary day to day lives we've always known. Trailer Parts Superstore - How Air Brakes Work - Eastern Marine Select the answer that correctly completes each statement. the trailer height is right when: the trailer will be raised slightly when the converter dolly is backed under it. True! when testing the coupling of a double trailer the landing gears of the rear trailer should be, you must drive through deep or flowing water . Mar 2 - Mar 3. HK Extended Tank Drain Assembly Kit with 10 Inch Braided Steel Hose 1/4 Inch Drain Valve and Elbow Fitting for Air Compressor 4.7 (463) $1499 FREE delivery Thu, Mar 9 on $25 of items shipped by Amazon Small Business All Tool Depot Air Compressor Drain Valve Replacement for Craftsman Petcock 072-0001, 072-0006 (1-Pack) 4.2 (20) $649 Flammable materials in the front trailer then it must have the placards on that trailer. It is important not to let water and oil build up in the air tanks. A vehicle transporting hazardous materials is required to display placards where? You are driving a 100-feet truck with double trailers at 30 mph. Any trailer with a reduced ground clearance B. closed C you are doing a walkaround inspection of a double or triple trailer rig. 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. Delivering to. Which of these is NOT a good thing to do when driving on slippery roads? In normal operation, trailer service brakes should be operated by? Trailer Air Tanks And Shutoff Valves - Page 50. More driving knowledge, questions and answers, online practice tests for obtaining a drivers . Converter dollies have spring brakes. you should check the trailer height before connecting a converter dolly to a second or third trailer. Doubles and triples must be driven very smoothly to avoid rollover or jacknife. Check them all. For emergency braking you should: A Push the brake pedal as hard as you can and hold it there B you can fuck a pornstar craigslist cars and trucks for sale by owner; kd linear actuator kdpt007 what is ait in the army; native american spiritual cleansing prayer simple spectrum coupon code; . A low air buzzer will go off indicating something is wrong and either the front or the Do converter dollies have spring brakes? front of the second trailer. 0000005733 00000 n Should the pintle hook be latched or unlatched when backing a dolly under the second trailer? By clicking on "Sign Up", you agree to our Terms of Use and Privacy Policy. Push the brake pedal as hard as you can and hold it there C. slow to a safe speed before entering the curve, then coast through it, Which of these is NOT a good thing to do when driving on slippery roads? When testing the coupling of the double trailer the landing gears of the rear trailer should be: You want to hook your combination to a second trailer that has no spring brakes. 2. The heavier trailer should be in the rear. A. for coupled doubles and triples, be sure that the pintle hook is in the open position D We are an independent company focused on providing valuable motor vehicle and permit practice test information. While doing a walkaround inspection of a double or triple, the converter dolly air tank drain valve should be _____, and the pintle hook should be _____. C That there is no space between upper and lower sixth wheel. The shortest trailer At section 1, where the cross-sectional area is 0.02 m2m^{2}m2, the air is at 40.0 kPa (abs), 60C60^{\circ} \mathrm{C}60C, and M=2.0. The pintle hook should always be secure when the vehicle is in motion. B. restore traction to the tires When you do this, you should hear: you are driving with double trailer and must use your brakes to avoid a crash. Connect the Converter Dolly to the Rear Trailer: Test the coupling by pulling against the pin of the second semitrailer. If you are only pulling one trailer, make certain the valve is fully in the closed position or it will leak air out of the air system. 0000010285 00000 n cQ 220rd8bihuM#Om>G*Lz)g^\l9'A9/omf|b49U[@%jGT-QR6i. This has the same value as the %%TIME_USED%% Variable on the Final Screen. A Some vehicles have dead end or dummy couplers to which the hoses may be attached when they are not in use. 12, 3. True! At section 2 downstream, the speed is 519 m/s. They are filled by the emergency (supply) line from the tractor. There is more chance for skids and loss of traction. 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: You are driving a triple trailer and there is a loss of air pressure in the emergency line. What do you check when making a visual check of coupling? That there is no space between upper and lower fifth wheel. Only a certified diesel mechanic can check this. 0000006015 00000 n Each trailer and converter dolly has one or more air tanks. The pressure in the service line tells how much pressure the relay valves should send to the trailer brakes. When you're trying to correct a drive-wheel braking skid why should you stop braking? They are not only longer, but also need more space because they cannot be turned or stopped suddenly. If there are no dummy couplers, the glad hands can sometimes be locked together (depending on the couplings). coupled to the rear of a tractor-trailer combination forming a double bottom rig, A coupling device of one or two axles and a sixth wheel by which a semitrailer can be You can reset the test and retake it as needed. A. opening the air tank petcock Never, 9. A Commercial Drivers License Overview, Trucking Terminology and Transportation Definitions. Any time you have to behind the shut-off valve then they need to remain open. "Glad hands" are coupling devices used to connect the service and emergency air lines from the truck or tractor to the trailer. Pull gently against them in a low gear to make sure the brakes work. 2003-2023 Chegg Inc. All rights reserved. Did you know you can fill out one quick form here on TruckingTruth and apply to several companies at once for paid CDL training? [California Commercial Driver Handbook] The weight of a truck: Is a major factor affecting stopping distance. You should be sure the converter dolly air tank drain valves are ____ and the pintle hook is ____. Does a converter dolly have a separate air tank? - Wisdom-Advices While inspecting your converter dolly coupling, you should make sure there is _____ between the upper and lower fifth wheel. (done) Chp 23: Cash Flow + Working Capital, Fundamentals of Engineering Economic Analysis, David Besanko, Mark Shanley, Scott Schaefer. C. the service brakes slowly move to the fully applied position, Some large trucks have converted or "spot" mirrors. D. Make sure the spare tire is secured, if it has one. When driving with more than one trailer, which trailer should be the first one behind the tractor? Flashcards - Doubles Triples Test #3 - FreezingBlue When you uncouple twin trailers, the last step is to Converter dollies You want to hook your combination to a second trailer that has no spring brakes. The braking systems of double and triple trailers are different than those of straight trucks because doubles and triples. Therefor, if there is a major leak in your service line, you may not know it until you try to use the service brake. Take this same test in our other testing modes How to Get a Hazardous Materials Endorsement, What is a CDL? Florida CDL Handbook | FL CDL Handbook Coupling & Uncoupling for You should not hear air escaping. Which of the following will probably happen if you are driving a double rig and a set of trailer wheels goes into a skid? B. the emergency line valve open and release air You should NOT: When checking the coupling system, make sure that the locking jaws are around the shank of the. A. closed; latched To help, some companies offer their drivers per diem to get them started Read More, Driving a semi-truck for a living is unlike any other profession. C. fully raised, Which of these statements about speed management and braking is true? 2023 PA Doubles - Triples CDL Practice Test 3 - CristCDL.com If you have traffic on both sides of your vehicle and something is blocking your lane, a move to the right still be best. 0000009556 00000 n If spare tire is on converter gear (dolly), make sure it is secured. If you do cross the air lines, supply air will be sent to the service line instead of going to charge the trailer air tanks. Page 1 - Doubles/Triples Test Study Guide for the CDL Any vehicle required by federal regulations to be placarded while transporting hazardous materials. The dolly tow bar may flip up causing bodily injury and making it very difficult to

the converter dolly air tank drain valve should be 2023