A modulating control valve can control the:AnswersSpring brakes.Landing gear.Air brakes. The Correct Answer and Explanation is : The correct answer is spring brakes. A modulating control valve is often used to control systems where gradual or precise adjustments are needed. Spring brakes, which are used in commercial vehicles like trucks and buses, are a safety […]

When backing your vehicle, you should:AnswersRely only on your mirrors.Look over your shoulder and out the rear window.Put your head out of the driver’s side window. The Correct Answer and Explanation is : The correct answer is: Look over your shoulder and out the rear window. When backing your vehicle, the safest and most effective

If your vehicle has a mechanical problem:AnswersSignal and pull into the slow lane.Stop in your lane and put on your hazard lights.Put on your hazard lights and pull off the road. The Correct Answer and Explanation is : The correct answer is: Put on your hazard lights and pull off the road. When your vehicle

Retarders on a vehicle:AnswersIncrease the wear of brakes.Reduce the wear of brakes.Cannot be turned off. The Correct Answer and Explanation is : The correct answer is: Reduce the wear of brakes. Explanation: A retarder is a device used on vehicles, primarily large trucks and buses, to assist with braking and reduce the reliance on conventional

What is a drawback of retarders?AnswersThey may not be permitted everywhere.They can help to slow a vehicle.They cannot be turned off. The Correct Answer and Explanation is : The correct answer is: They may not be permitted everywhere. Explanation: Retarders are devices used in vehicles, particularly heavy trucks, to assist in slowing down or controlling

A cargo of hanging meat:AnswersIs stable due to the placement of the load.Can be problematic because animals may be attracted to the scent of the meat.Is unstable due to its high center of gravity.Is discouraged during the summer months. The Correct Answer and Explanation is : The correct answer is: Is unstable due to its

When only the tractor is equipped with an Anti-Lock Braking System (ABS):AnswersThere is a decreased risk of jackknifing.There is an increased risk of jackknifing.The brakes will not work as effectively as they would without ABS.The brakes will become more sensitive. The Correct Answer and Explanation is : When only the tractor is equipped with an

What do speed limit signs indicate?AnswersPotential driving speeds for the areaThe maximum or minimum speed that is legally allowed to be drivenThe speed drivers should drive in heavy trafficThe speed drivers should drive under poor conditions The Correct Answer and Explanation is : The correct answer is: The maximum or minimum speed that is legally

Which of the following is true about vehicles displaying a diamond-shaped sign that indicates a hazardous load?AnswersThey are not allowed to drive on freeways.They must stop before crossing railroad tracks.They are not allowed to exceed 35 mph. The Correct Answer and Explanation is : The correct answer is: They must stop before crossing railroad tracks.

Which of the following is not a type of retarder?AnswersExhaustEngineAir The Correct Answer and Explanation is : The correct answer is Air. Explanation: In the context of vehicles, particularly trucks or large vehicles, a retarder is a device used to slow down the vehicle without using the traditional braking system. It is designed to enhance