the converter dolly air tank drain valve should be the converter dolly air tank drain valve should be

a. blood Doubles and triples are more likely to turn over than other combination vehicles because of the "crack- the-whip" effect. 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. Which the hand valve on, you should test the trailer brakes by opening the service line valve at the rear of the trailer. B. slightly raised "Glad hands" are coupling devices used to connect the service and emergency air lines from the truck or tractor to the trailer. When driving a truck with more than one trailer, which trailer should be first behind the truck? Connect the Converter Dolly to the Rear Trailer: Test the coupling by pulling against the pin of the second semitrailer. Open the emergency line shut-off valve at the rear of the last trailer. D 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. A Doubles and triples are more likely to turn over than other combination vehicles because of what effect? By using this site, you agree to be bound by our Terms of Use, Privacy Policy and Cookie Policy, Copyright 2000-2023 MH Sub I, LLC dba Internet Brands. retrovirus $_____________________________$. Slow to the safe speed before entering, then accelerate slightly through the curve. and the converter dolly air tank drain valve should be _____. Study section 6.2 if you can't answer all of these questions. The application only takes one minute. Take this same test in our other testing modes How to Get a Hazardous Materials Endorsement, What is a CDL? Also available in App Store & Google Play. Calculate the voltage gain of each. You should hear air escaping, showing the entire system is charged. What value of channel width must the design use? 0000006383 00000 n You are driving a tractor with multiple trailers. Any vehicle, regardless of size, designed to transport 16 or more persons, including the driver. The puzzle: At the far left edge, the plates are in contact, so the path length difference between rays 222 and 333 is zero. You should be sure the converter dolly air tank drain valves are ____ and the pintle hook is ____. You should keep at least ____ seconds of space ahead of you. The service brakes slowly move to the fully applied position Hook dolly to front trailer. To check if the converter dolly is securely coupled to the rear trailer you should: Pull gently against the pin of the second trailer. Page 7-6 Commercial Driver's Manual/2.0 = Be sure air lines are supported and glad hands are properly connected. You are visually checking the coupling of a converter dolly to the rear trailer. Take special care when pulling two and three trailers. What is one function of the tractor protection valve? HlTo xGf`{iIMh-x||?pbE':X4ZZZRbu7 uvi_RHUkVXBVu{^B3 4e/iw\]RE] YY7i)e V*h(++WQ-]Xm9c5yU6BS" 5HiL,[b)ee:t/ )%BVGpU7T\ZJD A Commercial Drivers License Overview, Trucking Terminology and Transportation Definitions. For emergency braking you should: You are doing a walk around inspection of a double or triple trailer rig. CDL Doubles and Triples Test Question and Answers 2023 [PDF]: Commercial Drivers License Doubles and Triples Endorsements Knowledge Test. Open. Open the shut-off valves at the rear of the last trailer and listen for air flow. 9. 1/32 to 3/32 of an inch. B. closed C. fully raised, Which of these statements about speed management and braking is true? Often do not have spring brakes The emergency brakes come on whenever air pressure in the emergency line is lost. on kingpin. Clean the couplers and rubber seals before a connection is made. You should be sure the converter dolly air tank drain valves are _______ & the pintle hook is __________. If spare tire is carried on converter gear (dolly), make sure it's secured. 0000001107 00000 n Release Dolly breaks by opening the air tank petcock or if the dolly has a spring break, use the Dolly parking brake control . This has the same value as the %%TOTAL%% Variable on the Final Screen. 0000010306 00000 n You are driving a 100-feet truck with double trailers at 30 mph. If you leave this page, your progress will be lost. A. release the spring brakes and check for movement A. fully lowered These valves permit closing the air lines off when another trailer is not being towed. B You can test that air is flowing to all trailers by opening? What does the drivers manual say about how much space you should keep ahead of your truck? B. They are filled by the emergency (supply) line from the tractor. The shortest trailer D You are doing a walkaround 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. Blue is used for the service lines, and red for the emergency (supply) lines. There are more things that can go wrong, and doubles/triples are less stable than other commercial vehicles. A major leak in the emergency line will cause the tractor protection valve to close and the trailer emergency brakes to come on. Which of the following is true about loading cargo into double or triple trailers? Studying and applying oneself is the only way to successfully learn the information you need to know to pass all testing required to obtain your CDL. 7. C. drive through quickly, With the hand valve on, you should test the trailer brakes by opening the service valve line at the rear of the rig. behind the shut-off valve then they need to remain open. 9 Questions You Must Ask, Decide if Truck Driving is The Correct Career Path, Do Not Sell or Share My Personal Information. Driving doubles/triples is also more dangerous in hot and cold weather driving, as well as on mountain roads. Never pull any trailer without visually inspecting the fifth wheel locking bar Leave the emergency line shut-off valve closed and open the service line valve. If one air system is very low on pressure _______. View More Details. There is no obligation whatsoever. We are here to help. You will have greater length and more dead axles to pull with your drive axles than other drivers. should remain in the closed position. You will not be tested on uncoupling twins unless you want to get a double/triple trailer endorsement on your license. 0000008915 00000 n Please visit using a browser with javascript enabled. Feel Free to add additional fields for the Quiz Taker to complete using the "Add Fields" options to the right. Be more careful in adverse conditions. The heaviest trailer Hit the article below to see specific information about AOBRDs! We'll help you make the right choices and prepare for a great start to your trucking career. 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. The rear trailer of a double A. you can steer more quickly and safely if you hold the wheel with one hand You are driving a 100-feet truck with double trailers at 50 mph. The Doubles and Triples written CDL Exam is required for your doubles and triples endorsement. Doubles and triples are more likely to turn over than other combination vehicles because of the "crack-the-whip" effect. B. slow to a safe speed before entering the curve, then accelerate slightly through it D 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. you are driving a set of doubles and a set of trailer wheels goes in a skid. C You may not notice a major leak in the service line until you try to put the brakes on. How can you test that air flows to all trailers? 0000009556 00000 n 5. Do converter dollies have spring brakes? which of these statements about managing space to the sides is true? Hit the article to see the way to back up your trailer like a pro! what is likely to happen if the pintle hook is unlocked with the dolly still under the second trailer? But the brakes will hold only as long as there is air pressure in the trailer air tank. 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. Any vehicle required by federal regulations to be placarded while transporting hazardous materials. By clicking the ["Send"] button, you agree to our Terms of Use and Privacy Policy, and to the use of cookies described therein, and you also consent to the collection, storage, and processing of your data in the United States where the level of data protection may be different from that in your country. 0000008894 00000 n Open the emergency line shut-off valve at the rear of the last trailer. You should be sure the converter dolly air tank drain valves are _______ and the pintle hook is _____. Which of the following will occur? Which of these is NOT a good thing to do when driving on slippery roads? Remember, the service line is not used unless you depress the brake pedal or use the trailer hand valve. Why should you not use the trailer hand valve while driving? In double and triple trailers, the trailer air supply control should pop or _________ when air pressure drops into the range of 20 to 45 psi. 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. When uncoupling a rear trailer, your rig should be parked in a straight line on? If not, there is a problem. A. completely open The road is dry and visibility is good. [California Commercial Driver Handbook] The weight of a truck: Is a major factor affecting stopping distance. Each trailer and converter dolly has one or more air tanks. C D A A 360 degree area of awareness is Then, the air loss from the leak will lower the air tank pressure quickly. 0000005733 00000 n You should NOT: The lightest trailer View the price and details of this FINSBURY PUMP SYSTEMS 400L (SINGLE STAGE) 5.5HP HONDA GX PETROL ENGINE (18M HOSE) FIRE WATER TANK | Mobile fire units. C These valves permit closing the air lines off when another trailer is not being towed. The crack the whip effect that troubles trucks with trailers. Use the engine brake or speed retarder. A. make things look smaller and farther away than they really are The crack the whip effect will topple the rear trailer first. Calculate the net energy change in kilojoules per mole that takes place on formation of MgF2_22(s) from the elements: Heat of sublimation for Mg(s) = 147.7 kJ/mol Eea_{ea}ea for F(g) = -328 kJ>mol, Bond dissociation energy for F2_22(g) = 158 kJ>mol Ei1_{i1}i1 for Mg(g) = 737.7 kJ>mol, Electrostatic interactions in MgF2_22(s) = -2957 kJ/mol Ei2_{i2}i2 for Mg(g) = 1450.7 kJ/mol. 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: If a converter dolly is still under the second trailer and you unlock the pintle hook, what will probably happen? It depends on the load For all brakes to work on a triple combination, you must have air supply? B This will supply air to the emergency (supply) lines. The trailer height is right when: The trailer will be raised slightly when the converter dolly is backed under it. With the red knob pushed in on the tractor dash, the service line should have air in it. Tractor-trailers are considered combination vehicles. These dollies will have a yellow lamp on the left side of the dolly Questions You Should Know For Doubles And Triples 1. B. for doubles and triples, the fifth wheel should be all the way towards the tractor In a certain electronic device, a three-stage amplifier is desired, whose overall voltage gain is 42 dB. 3. cQ 220rd8bihuM#Om>G*Lz)g^\l9'A9/omf|b49U[@%jGT-QR6i. You should keep at least ____ seconds of space ahead of you. 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 the road is dry A dolly should be pulled out from a rear trailer using? They provide the air pressure used to operate trailer brakes. doubles/triples flip flop over from quick steering movements more easily than many other vehicles. the crack-whip effect that triubkes trucks with trailers is most likely to cause a tip over when. The road is dry, and visibility is good. None of the above, 4. Which is most likely to tip over: Some do. When connecting a converter dolly to a rear trailer, the trailer height must be adjusted so that it is? You must stop, yield to traffic and pedestrians, and only proceed when safe. Go to Section 4: Other Topics This question is in Section 4: Other Topics of our CDL Test Guide. Your vehicle is so long that you must swing wide to make the turn. Ship to Store. front of the second trailer. Hazardous materials must be placarded on all four sides of EACH Trailer. ), a 15 year truck driving veteran, in January 2007. Follow the procedures described later in this section. Sketch the shape of the passage between sections 1 and 2. 2) the second test is to go out to the trailer to ensure that the parking brakes have indeed applied. Any combination of vehicles with a gross combined weight rating (GCWR) of 26,001 or more pounds, providing the gross vehicle weight rating (GVWR) of the vehicle being towed is in excess of 10,000 pounds. Which of the following must be connected when coupling tractor to trailer or trailer to trailer? B. allow one vehicle length for every 10,000 lbs of gross vehicle weight 2. B. are the easiest to stop since there is no shifting cargo That split second that you release the brakes will allow them to match the vehicles road Check them all. Close the emergency line shut-off valve at the rear of the trailer. You should be sure the converter dolly air tank . 2003-2023 Chegg Inc. All rights reserved. All of the above, 6. The driver must yield the right-of-way to other vehicles when merging and when entering a highway from an alley. When uncoupling, you should never unlock the _______ with the dolly still under the rear trailer. Calculate the Mach number at section 2. B. you need about four times as much stopping distance at 40 mph as at 20 mph Which of these statements about the handling of doubles and triples is true? A. countersteer C. use controlled or stab braking, The best way to stop any skid is to: Locking jaws closed on Try our free CDL Doubles and Triples Test Question and Answers Quiz online. Open will have a lamp on the drivers side. They are not only longer, but also need more space because they cannot be turned or stopped suddenly. 0000007487 00000 n Help your friends discover what it takes to become a successful truck driver. Once that's complete, then its an easy push back and the can and will get stuck on a raised railroad crossing. 1/4 in. When you do this, you should hear: Ais escape from the open valve. All other trailer air functions use the emergency line. What should you check for when inspecting the converter dolly and the pintle hook? be coupled to the rear of a tractor-trailer combination forming a hexagon bottom rig, A coupling device of one or two axles and a fifth wheel by which a semitrailer can be You wish to turn right from one two-lane, two-way street to another. The driver will be required to complete this requirement in three eight hour shifts. The couplers have a rubber seal that prevents air from escaping. Converter dollies are connected to front trailers with a? 0000004689 00000 n B. pull gently against the pin of the second semitrailer 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 . rear brakes will not work properly. C. make things look larger and closer to you than they really are, When hauling triple trailers at a speed less than 40 mph, you should leave at least _____ second(s) for every ten feet of your truck between you and the vehicles ahead of you. Therefore, look far ahead so you can slow down or change lanes gradually when necessary. Dont hesitate to take advantage of our practice tests in each category specific to your needs. When connecting the glad hands, press the two seals together with the couplers at a 90-degree angle to each other. These trailers have no parking brake. In normal operation, trailer service brakes should be operated by? you are driving on a slippery road during the day. coupled to the rear of a tractor-trailer combination forming a double bottom rig, Careful of the wording! A bent or damaged kingpin on a coupling should be? The trailer is at the correct height when. Wait for air pressure to reach normal, then push in the red trailer air supply knob. A. use a low gear When does the Driver's manual say you should disable the steering axle brake? A. hand valve Delivering to. Once you have coupled your rear trailer, you should test the coupling by? Also, this page requires javascript. You must treat a flashing red signal as you would treat a STOP sign. How To Use Cruise Control Effectively As A Truck Driver. High Road 2.0! 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; . To do this without wheel chocks you should: Empty trucks: When parking your double or triple combination, you should look for a parking space X D5^4aX{Ka)nT)Ac g" endstream endobj 58 0 obj 108 endobj 23 0 obj << /Type /Page /Parent 19 0 R /Resources 24 0 R /Contents [ 31 0 R 33 0 R 35 0 R 46 0 R 48 0 R 50 0 R 52 0 R 54 0 R ] /MediaBox [ 0 0 612 792 ] /CropBox [ 0 0 612 792 ] /Rotate 0 >> endobj 24 0 obj << /ProcSet [ /PDF /Text ] /Font << /F2 37 0 R /F4 40 0 R /TT2 28 0 R /TT4 26 0 R /TT6 42 0 R /TT8 44 0 R >> /ExtGState << /GS1 55 0 R >> /ColorSpace << /Cs5 29 0 R >> >> endobj 25 0 obj << /Type /FontDescriptor /Ascent 905 /CapHeight 0 /Descent -211 /Flags 32 /FontBBox [ -222 -325 1072 1037 ] /FontName /ArialMT /ItalicAngle 0 /StemV 0 >> endobj 26 0 obj << /Type /Font /Subtype /TrueType /FirstChar 32 /LastChar 121 /Widths [ 278 0 355 0 0 0 0 191 333 333 0 0 278 333 278 278 556 556 556 556 556 556 556 556 556 556 278 0 0 0 0 556 0 667 667 722 722 667 611 778 722 278 0 667 556 833 722 778 667 0 722 667 611 722 0 944 0 667 0 0 0 0 0 0 0 556 556 500 556 556 278 556 556 222 222 500 222 833 556 556 556 556 333 500 278 556 500 722 500 500 ] /Encoding /WinAnsiEncoding /BaseFont /ArialMT /FontDescriptor 25 0 R >> endobj 27 0 obj << /Type /FontDescriptor /Ascent 905 /CapHeight 0 /Descent -211 /Flags 96 /FontBBox [ -262 -325 1082 1025 ] /FontName /Arial-ItalicMT /ItalicAngle -15 /StemV 0 >> endobj 28 0 obj << /Type /Font /Subtype /TrueType /FirstChar 32 /LastChar 118 /Widths [ 278 0 0 0 0 0 0 191 0 0 0 0 0 333 278 278 556 556 556 556 556 556 556 556 0 0 0 0 0 0 0 0 0 0 0 722 722 0 0 0 0 0 0 0 0 833 0 0 667 0 0 0 611 0 0 0 0 0 0 0 0 0 0 0 0 556 556 500 556 556 0 556 0 222 0 0 222 833 556 556 556 0 333 500 0 556 500 ] /Encoding /WinAnsiEncoding /BaseFont /Arial-ItalicMT /FontDescriptor 27 0 R >> endobj 29 0 obj [ /CalRGB << /WhitePoint [ 0.9505 1 1.089 ] /Gamma [ 2.22221 2.22221 2.22221 ] /Matrix [ 0.4124 0.2126 0.0193 0.3576 0.71519 0.1192 0.1805 0.0722 0.9505 ] >> ] endobj 30 0 obj 638 endobj 31 0 obj << /Filter /FlateDecode /Length 30 0 R >> stream 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. the trailer height is right when: the trailer will be raised slightly when the converter dolly is backed under it. 0000003261 00000 n A converter dolly is still under the second trailer when you unlock the pintle hook. Before coupling a trailer, you should make sure it is at the right height using? 0000006015 00000 n Terms in this set (43) Converter dollies are used to connect: A tractor-trailer combination to another trailer. 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. C. the service brakes slowly move to the fully applied position, Some large trucks have converted or "spot" mirrors. A coupling device of one or two axles and a fifth wheel by which a semitrailer can be coupled to the rear of a tractor-trailer combination forming a double bottom rig Should the shut off valves on the rear of the first trailer be open or closed on a set of double trailers? Double and triple trailers increase not only the operators risk of safety, but also the other motorists around him. The converter dolly air tank drain valve on coupled double/triple trailers should be: You are driving a 100-feet truck with double trailers at 50 mph. Converter dolly air tank drain valve: CLOSED. 12, 3. Unless you are draining the condensation out of the air tank, then the drain valve B B. johnson bar Air escape from the open valve You are driving with double trailers and must use your brakes to avoid a crash. speed and start spinning again, in turn stopping your skid, All the listed answers would be correct. If spare tire is on converter gear (dolly), make sure it is secured. Safety fail-safe features of a tractor-trailer converter dolly. 0000007032 00000 n Older trailers do not have spring brakes. 21 0 obj << /Linearized 1 /O 23 /H [ 1162 213 ] /L 29759 /E 11109 /N 7 /T 29221 >> endobj xref 21 38 0000000016 00000 n allow "much more space than is needed for ideal driving conditions". We wish you the best of luck in your endeavors and are pleased to be of assistance. To do this without wheel chocks you should: When uncoupling the rear semitrailer, you should lower the converter dolly landing gear: When driving a double or triple, you need more space because they: Which of these statements about emergency steering is true? If the fifth wheel on a coupling is too far forward, the tractor frame may hit? 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. 0000010285 00000 n This has the same value as the %%PERCENTAGE%% Variable on the Final Screen. Visually check to make sure that the rear trailer is slightly lower than the center of the If loading fails, click here to try again. These mirrors: Make things seem smaller and further away than they really are. You are doing a walk around inspection of a double or triple trailer rig. If you do, the brakes may not work correctly. Make a sketch that explains this phenomenon in terms of a feedback loop . If your tractor protection valve doesn't work properly, then if an air hose starts to leak what could happen? The individual voltage gains of the first two stages are to be equal, while the gain of the third is to be one-fourth of each of the first two. Simply click in your answer to each CDL practice test question. That there is some space between the upper and lower fifth wheel. When driving with more than one trailer, which trailer should be the first one behind the tractor? If the converter dolly is close to your semitrailer, you should wheel it into position? There is no requirement or exact standard for color coding. Any single vehicle with a GVWR of 26,001 or more pounds, or any such vehicle towing another not in excess of 10,000 pounds.