Double #2
Double Triple Test | Wyoming 2026 #2 Page 3 of 3
Train for FREE with our Wyoming 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 WY CDL double triple license in 2026, 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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15 . When an S-cam turns inside a brake drum, the S-cam:
When a brake pedal is pressed and the S-cam is turned, the S-cam presses the brake shoes against the inside of the brake drum. This causes friction and will cause the vehicle to slow.
16 . When doing an inspection, ensure that the brake pads are:
Free of oil or grease.
When inspecting a vehicle's brakes, you should make sure the shoes and pads do not have oil, grease, or brake fluid on them.
17 . When the spring brakes are activated in a vehicle with air brakes, you should never:
Open the trailer doors.
In a vehicle with air brakes, never push the brake pedal down when the spring brakes are activated. The combined force of the springs and the pressure of the air brakes could damage the brakes.
18 . When a tire goes flat, you may hear a loud bang. The truck will be affected:
Only if the truck is hauling a load.
There may be a delay of a few seconds between the sound of a tire failing and the time that the vehicle is affected by the tire failure. Because of the short delay, a driver may initially believe that the sound came from another vehicle.
19 . Why should your mirrors be adjusted to show the road behind you as well as part of your vehicle?
The driver should be able to see the reflection of surrounding vehicles on the trailer.
Part of your vehicle should be visible in your mirrors so that you have a point of reference when judging how close other drivers and objects are to your vehicle.
20 . What must be on an air tank in an air-braked vehicle?
An oxidizer
