Double #2
Double Triple Test | Illinois 2024 #2 Page 2 of 3
Train for FREE with our Illinois CDL double triple practice test online. The official exam test consists of several obligatory parts, with all of them checking your knowledge of different blocks of road rules. If you need to obtain a IL CDL double triple license in 2024, practice as much as possible. Free sample tests published on our website will help you check and improve your knowledge and boost your grades. Please bear in mind that DMV requirements may vary from state to state.
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8 . How many daily hours of sleep does an adult need to maintain alertness?
Four to five
Being properly rested is essential to the safe operation of a CMV. To maintain alertness, most people need seven to eight hours of sleep per night.
9 . To help prevent a rollover, cargo should be:
Placed on the driver’s side of the trailer.
To reduce the risk of a rollover, the weight of cargo in a trailer should be kept as low to the ground as possible. Weight should not be placed primarily on one side of the trailer as this could make the trailer lean, increasing the risk of a rollover.
10 . On slippery roads, you should:
Accelerate and decelerate frequently.
Make sure to drive slowly and smoothly on slippery roads. Do not pass slower vehicles unless it is necessary to do so. Avoid frequently changing your speed under such conditions.
11 . What is the Johnson bar?
A valve that allows for the release of excess pressure in the braking system
The trailer hand valve, also called the trolley valve or Johnson bar, is used to work the trailer brakes. It should be used only to test the brakes.
12 . Foundation brakes are used:
At each wheel.
Foundation brakes are used at each wheel. The most common type is the S-cam drum brake.
13 . For safest handling, the heaviest trailer should be:
Covered with a tarp.
In a double or triple combination, the heaviest trailer should be immediately behind the tractor. The lightest trailer should be in the rear.
14 . To make a stop in a vehicle using air brakes, the driver should:
Pull out the brake knob.
