Retarder. WHY IS CONTROLLED OR STAB BRAKING BETTER THAN SHORT, LIGHT BRAKE PEDAL PRESSURE ON LONG DOWNHILL GRADES? When should you downshift an automatic transmission? WHEN THE LOW AIR PRESSURE WARNING COMES ON, YOU SHOULD: stop and park as soon as possible. c. Either the front or rear brakes will not be fully functional . C Brake as hard as you can, get off the brakes when the . The Vermont CDL test consists of 50 questions. When roads are slippery, you should: A Stop and test the traction while going up hills. Release the brakes if the wheels lock or you need to . If you reapply the brakes before the wheels start . (It can take up to 1 second for the wheels to start rolling after you release the brakes. stop to avoid a crash, use controlle d or stab braking. Let us know if we can help in any way. Hopefully you are not tailgating the car in front of you so you can . Apply the brake all the way. You should avoid driving through deep puddles or . B. Now I know that is not the best; controlled braking should be the proper terminology, using an on/off method of applying the service brakes to reduce the chance of . Stab braking should not be used on vehicles with: Antilock brakes. It can take up to 1 second for the wheels to start rolling after you release the brakes. C Only when the vehicle does not require placards D Only when a person who has the hazardous materials endorsement rides in the vehicle . If the brakes are working . 9. Apply trailer brakes to reduce speed or maintain speed B. Use controlled braking instead. Release the brakes when the wheels lock up. (It can take up to 1 second for the wheels to start rolling after you release the brakes. A controlled braking method is designed to brake by keeping your vehicle in a straight line, but allows you to turn if necessary. Stab braking should not be used on vehicles with. 1/4. Stab Braking . (It can take up to 1 second for the wheels to start rolling after you release the brakes. golpes" para detener el vehculo. If you reapply the brakes before the wheels start . Passing Score: 80%. Start Test #7 Now 1. B. anti-lock brakes. Emergency stab braking is primarily used on vehicles without the ABS system to prevent wheels from locking up, but it can be very useful even on vehicles that have ABS. When should you use stab braking? Answer (1 of 4): When you are braking without an ABS (automatic braking system), 'you' are the 'automatic' portion of stopping your vehicle. Share It On FacebookTwitterEmail If you do not have an automatic tank drain, when should you drain the air tanks? (It can take up to 1 second for the wheels to start rolling after you release the brakes. In air brake vehicles, the parking brake should be used: Anytime the vehicle is parked. B. Review Section 2.17.2 on How To Stop Quickly and Safely, if you cannot remember either the controlled or the stab braking meth ods. However, it should only be used in emergency situations. Apply the brakes just hard enough to slowdown about 5 mph below your safe speed. Keeping the steering wheel movements to a minimum. To pass, the applicant must answer at least 16 questions correctly. Tires of mismatched sizes should not be used on the same vehicle. Drivers appear to be embracing the use of educational levels in car insurance quotes. Stab braking: Use only on vehicles without anti-lock systems. help slow the vehicle you are driving and reduce brake wear. You should: You are testing the stopping action of service brakes on a hydraulic system. You can use the "controlled braking" method or the "stab braking" method. I have been guilty of recommending stab braking as the preferred method of reducing speed during a descent. D. Press hard on the brake pedal and apply full hand valve until you stop. Controlled braking. . The controlled braking method involves: Applying the brakes as hard as you can without locking up the wheels. SOMETIMES YOU NEED TO LEAVE A ROAD TO AVOID A HAZARD OR EMERGENCY. The front brake limiting valve is only on vehicles made before 1975. 2. You should brake in a way that will keep your vehicle in a straight line and allow you to turn if it becomes necessary. B Drive alongside other drivers. As soon as teh wheels start rolling, put on the brakes fully again. . 2012-08-16 03:37:47. Which of these can mean there is a problem? In addition, for the endorsement, you are expected to pay from $5 to $10 for each one. Stab Braking Use only on vehicles without anti-lock systems. They should also be vehicles used on daily routes and not rarely-driven spares. B. anti-lock brakes. Start your CDL test study with our best CDL practice test right now! When stopped, select a starting gear. CDL General Knowledge Practice Test. 6. (It can take up to 1 second for the wheels to start rolling after you release the brakes. Standard CDL license is expected to pay between $75 and $ 100, which may vary from state to state. Air Storage and Drain Tanks: Air storage tanks are used to hold compressed air. 24. Thus, the total stopping distance for vehicles with air brake systems is made . To hold your speed when going downhill. C) On slippery roads, it takes longer to stop and is harder to turn without skidding. The general knowledge test covers the contents of the Colorado CDL Manual . Emergency stab braking is when you _____. Robotics. a. One system typically operates the regular brakes on the rear axle or axles. With hydraulic brakes (used on cars and light/medium trucks), the brakes work instantly. Explaination In stab braking, you deliberately keep locking and unlocking the wheels. C 2 psi in one minute. All CDL applicants (Class A, B and C) must study the following sections: Driving Safely, Transporting Cargo Safely, Air Brakes (if you plan to operate vehicles . Defines stab as brake till lock let off then brake till lock let off Defines controlled as . A. Down shift . Correct answer is (c) Anti-lock brakes Stab braking should not be used on vehicles with Anti-lock brakes. Sooner or later you will need to brake. D 3 psi in one minute. C. Hazardous materials. See answer (1) Best Answer. Stab braking: A Should never be used B Involves locking the wheels C Involves steady pressure on the brake pedal D Should only be used on slick roads . 13. Each system has its own air tanks, hoses, lines, etc. A straight truck brake system should not leak at a rate of more than psi per minute with the . The Colorado CDL test consists of 50 questions. You can use the "controlled braking" method or the "stab braking" method. This answer is: Helpful ( 1) SOMETIMES YOU NEED TO LEAVE A ROAD TO AVOID A HAZARD OR EMERGENCY. Apply the brakes about halfway, but keep the wheels rolling. Cannot be used on interstate highways. c. Stop and safely park as soon as possible . CA DMV CDL General Questions New. 5.2 - Dual Air Brake. Stab braking is by far better and safer than lockup, but it is still not the most efficient, safe braking procedure. Brake failure - Brakes kept in good condition rarely fail. The controlled braking method involves: Applying the brakes as hard as you can without locking up the wheels. Stab braking: Use only on vehicles without anti-lock systems. Release the brakes when the wheels lock up. To make an emergency stop with air brakes, using the stab braking method, you should: A Pump the brake pedal rapidly and lightly. Stab Braking Use only on vehicles without anti-lock systems. Apply the brake all the way. Apply the brakes completely until the wheels lock up, release the brakes until the wheels start rolling, then repeat the process. As soon as the wheels start rolling, put on the brakes fully again. Two better methods . Many schools have large open driveways, entrance roads . You are asked to haul hazardous materials in a placarded vehicle. STAB BRAKING SHOULD NOT BE USED ON VEHICLE WITH: A. Trailers. As little as possible b. This braking technique is a great way to maintain control of your car and avoid skidding. When asked if education should be taken into account, 46% supported the idea, marking a 119% jump from last . Stab breaking is DELIBERATE INTERMITTENT pressure applied on the brake pedal, in the form of 'stabbing,' which is used on vehicles without ABS because you wheels WILL lock up since there's no ABS. C Decreases the distance that you look ahead of your vehicle. B. Antilock brakes. Stab braking: Use only on vehicles without anti-lock systems. Release the brakes when the wheels lock up. You should pump the brake pedal three times then apply firm pressure to the pedal for five seconds. Number of Question 20. EMERGENCY STAB BRAKING IS: repeatedly braking until the wheels lock, and then releasing pressure. Related questions 0votes 1answer The air loss rate for a straight truck or bus with the engine off and the parking brakes off and the service brakes on should not be more than You will NOT see these questions on your test at motor vehicle. Use methods of controlled or stab braking. Use stab braking C. Use only the trailer brakes to maintain "safe" speed D. Apply brakes when the vehicle speed reaches 5 mph over "safe" speed and then release when speed of vehicle is back at the "safe" speed 20. the driver must be able to see a warning that is given before air pressure in the service air tanks falls below: 60psi. 25. B. Antilock brakes. C. 4/32 inch tread depth is the maximum allowed on drive tires. You are inspecting hydraulic brakes. To pass, you must correctly answer at least 40 questions (80%). air loss in a straight truck or bus should not be more than ___ with the engine off and the brakes on. As soon as the wheels start rolling, put on the brakes fully again. 27. Stop quickly and safely - You should brake in a way that will keep your vehicle in a straight line and allow you to turn if it becomes necessary. What is the difference between controlled braking and stab braking? Use the braking effects of the engine, and when the vehicle speed reaches the "safe" speed, apply brakes firmly until vehicle . A controlled braking method is designed to brake by keeping your vehicle in a straight line, but allows you to turn if necessary. b. Never been told to use stab braking until wheels lock up thats a disaster waiting to happen. Per CDL training documents, stab braking involves locking the wheels, controlled braking does not lock the wheels. A anti-lock brakes. Stab braking: a. Correct answers needed to pass: 40. The stop light switch turns on the brake lights when applying the brakes, alerting anyone behind that the vehicle is slowing. B Brake hard until the wheels lock, and then get off the brakes for as much time as the wheels were locked. Use stab braking C. Use only the trailer brakes to maintain "safe" speed D. Apply brakes when the vehicle speed reaches 5 mph over "safe" speed and then release one speed of vehicle is back at the "safe" speed. If you reapply the brakes before the wheels start rolling, the vehicle will not straighten out. Should never be used b. EMERGENCY STOPS.- When applying air brakes in an emergency stop, brake so you can steer and keep your vehicle in a straight line. (b) Use light steady pressure on the brake pedal. You can use the controlled braking method or the stab braking method. To pass, you must correctly answer at least 40 questions (80%). A) Apply the brakes while turning. Fully apply the brakes, let the wheels lock up, and hold the brake pedal down, keeping the wheels locked until the vehicle stops. The brake drums will not be fully operational . You can reset the test and retake it as needed. A) Shady parts of the road allow better traction than open area. Apply the brake all the way. Stab braking ( or Cadence braking as it is also called ) is a technique that can be used in a car that doesn't have an ABS system. a. (It can take up to 1 second for the wheels to start rolling after you release the brakes. C) On slippery roads, it takes longer to stop and is harder to turn without skidding. C) On slippery roads, it takes longer to stop and is harder to turn without skidding. It is permissible to use radio and bias-ply tires together on the same axle. Most heavy-duty vehicles use dual air brake systems for safety. Pressure on the brake pedal is released and speed increases. Questions come from chapters covering: Driving Safely, Tank Vehicles, Hazardous Materials and Combination Vehicles. Wrong! D. 2/32 inch tread depth is permissible for steering tires. What is a "pull-up?" . Sometimes you need to leave a road to avoid a hazard or emergency. D Make turns as gently as possible. Apply the brakes completely until the wheels lock up, release the brakes until the wheels start rolling, then repeat the process. Correct! Anytime the vehicle is parked c. To hold your speed when going downhill d. Only during pre-trip and post-trip inspections 25. Apply the brakes just hard enough to slowdown about 5 mph below your safe speed. A) Shady parts of the road allow better traction than open area. If the vehicle is moving at a pretty good pace; in order to stop, the brake pedal has to be pumped. Apply the brake all the way. which of these is not a type of retarder. 21. 5. The right way is smooth gently apply pressure up to a maximum, and then ease equally smoothly off the pedal. Good luck in your CDL pursuit. evitar un choque, use el frenado controlado o "a golpes". . the purpose of retarders is to. If your vehicle is equipped with a manual transmission, do not push the clutch in until the engine rpm is lowered to idle speed. [.] Use the braking effect of the engine C. Use stab braking D. Apply brakes when your vehicle exceeds the "safe speed" by 5 mph 18. a. Questions on Test: 50. 12. However, with air brakes, it takes a little time (one half second or more) for the air to flow through the lines to the brakes. C. Brake as hard as possible until the wheels lock, then release the brakes until the wheels start rolling, and repeat. . First, all buses used for braking training should be in top condition. 26. Press hard on the brake pedal and apply full hand valve until you stop b. light pressure heats up the brakes. Keeping the steering wheel movements to a minimum. an air pressure guage to show the pressure avaiable for braking. STAB BRAKING SHOULD NOT BE USED ON VEHICLE WITH: A. Trailers. Apply your brakes all the way. 2. An air dryer is used to take the moisture out of the air, so that water condensation will not build up in the air storage tanks and cause the brakes to fail, such as when the water freezes in the winter. Apply the brakes about halfway, but keep the wheels rolling. As soon as teh wheels start rolling, put on the brakes fully again. . Which of the following statements about backing a commercial motor vehicle to a dock is NOT true? The center of gravity of a load: a. A) Apply the brakes while turning. A dual air brake system has 2 separate air brake systems, which use a single set of brake controls. When asked if education should be taken into account, 46% supported the idea, marking a 119% jump from last . Spring brakes are used for the emergency and parking brake . Parking . Age to apply: 18. All CDL applicants (Class A, B and C) must study the following sections: Driving Safely, Transporting Cargo Safely, Air Brakes (if you plan to operate . When a failure occurs in the service brake system, the system you need to use to stop the vehicle is the: A. IN General Knowledge Fact Sheet. Use stab braking. In air brake vehicles, the parking brake should be used: As little as possible. The general knowledge test covers the contents of the Vermont CDL Manual . Click to see full answer. response is to hit the brakes. WHEN YOU DO SO YOU SHOULD KEEP IN MIND, THAT: A. Hence, stab braking should not be used on a vehicle with antilock brakes. Release the brakes when the wheels lock up. With air brake equipped vehicles, the parking brakes should be used a. The throttle is not a light-switch, it's a . As soon as the wheels start rolling, put on the brakes fully again. Test questions come from the Nevada Commercial Driver License Manual. Controlled Braking. Release the brakes when the wheels lock up. As soon as the wheels start rolling, put on the brakes fully again. To save money, taking free CDL tests online to hone your knowledge and pass all CDL tests. When set to "slippery," it cuts the standard air pressure to the front brakes in half. This is a good response if there s enough distance to stop, and you use the brakes correctly. Release the brakes if the wheels lock or you need to . These General Knowledge practice questions are meant to accompany our Free Online CDL Courses. Now I know that is not the best; controlled braking should be the proper terminology, using an on/off method of applying the service brakes to reduce the chance of . Wiki User. Select your State Take more free practice tests for other CDL topics with our dmv cdl practice tests now! C) On slippery roads, it takes longer to stop and is harder to turn without skidding. In air brake vehicles the parking brakes should be used how? Do not jam on the brakes. Check out the full courses if you find these questions difficult. The Tank endorsement can be used with the Class A, B or C CDL. The distance you should look ahead of your vehicle while drving amount to about _____ miles for highway speed. 28. Fully apply the brakes, let the wheels lock up, and hold the brake pedal down, keeping the wheels locked until the vehicle stops. Should be kept as high as possible b. I have been guilty of recommending stab braking as the preferred method of reducing speed during a descent. B. CA DMV CDL General Questions New. Copy. Emergency stab braking is when you: (a) Press hard on the brake pedal and apply full pressure on the hand valve until you stop. You should brake in a way that will keep your vehicle in a straight line and allow you to turn if it becomes necessary. When going down a long/steep downgrade you should use engine braking to . Most shoulders are not strong enough to support a heavy vehicle. C. Hazardous materials. Apply the brake all the way. Involves releasing the brakes only after the wheels lock up c. Involves steady pressure on the brake pedal without locking the wheel d. Skids are never possible while performing this maneuver 29. 3 psi in one minute. Repeatedly pump the brakes to slow the vehicle down. A sign of brakes fading is: A. How To Perform The Stab Braking Technique "Combination Vehicles - Quiz Sample #3, 15 questions", "url":"https . Please log inor registerto add a comment. Drivers appear to be embracing the use of educational levels in car insurance quotes. Most shoulders are not strong enough to support a heavy vehicle. B. (c) Brake as hard as you can, release the brakes when the wheels lock up and put the brakes on again when the wheels start rolling. Emergency stab braking is when you: Brake as hard as you can, release the brake when the wheels lock, then push the brakes again when the wheels start rolling. Any time the vehicle is parked. [.] Per CDL training documents, stab braking involves locking the wheels, controlled braking does not lock the wheels. when you do so you should keep in mind, that: . With this method, you apply the brakes as hard as you can without locking the wheels. Its application is extremely useful when hauling, towing, or driving a heavy vehicle, so I'll cover all the situations where emergency stab braking might come in handy. On a vehicle with anti lock brakes. com/QDRGPHJ","txt":"Why drain water from the compressed air tanks?, To make an emergency stop with air brakes using the stab braking method, you should:, Oil and water usually collect in . Press pedal to floor & hold until just before the wheel. Apply the brake all the way. Why drain water from the compressed air tanks?, To make an emergency stop with air brakes using the stab braking method, you should:, Oil and water usually collect in compressed air tanks. WHEN YOU DO SO YOU SHOULD KEEP IN MIND, THAT: A. 21. Most hydraulic brake failures . Stab braking: Use only on vehicles without anti-lock systems. The most important thing to do when a low-pressure warning light comes on is to. Up shift b. Use controlled braking. Release the brakes when the wheels lock up. A. When traveling down a long downgrade, you should always: A. Stab breaking has always been described to me as pressing firmly on the brakes reducing speed about 10 mph and releasing until speed builds back up the 10 or so mph and repeating.