Rev Up and Rule the Road 2025: JJ Keller Entry Level CDL Driver Test Challenge!

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Question: 1 / 400

Prior to inspecting the engine compartment and front axle components, what must you verify?

That all mirrors are adjusted

That the parking brakes have been set

Verifying that the parking brakes have been set is essential before inspecting the engine compartment and front axle components. This safety measure ensures that the vehicle remains stationary while you perform the inspection. If the parking brakes are not engaged, the vehicle could roll unexpectedly, leading to potential injury or damage during the inspection process.

Ensuring the vehicle is securely in place before conducting any checks around moving parts or where fluids might be present significantly reduces the risk of accidents. This precaution highlights the importance of safety in operating and maintaining a commercial vehicle, determining a proactive approach to vehicle inspections and overall driver responsibility.

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That the fuel level is sufficient

That the headlights are functional

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