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General Knowledge Practice Question 65

RequiredGeneral Knowledge · Question 65

When parking on a level surface, you should:

• AEngage parking brakes only
• BEngage parking brakes and place chocks under wheels if needed for the load
• CLeave the engine running
• DSet the air at maximum

Correct answer: B. Engage parking brakes and place chocks under wheels if needed for the load

Why: Always set the parking brake. For loads that require it, additional wheel chocks add a backup against rollaway. Never leave the cab without the brake set.

How this question fits the General test

FMCSA requires General Knowledge competency under 49 CFR 383.111 because every CDL holder operates a heavy vehicle in mixed traffic where situational judgment, pre-trip discipline, and emergency response routinely separate a safe trip from a fatal one.

Study technique for this topic

Read the FMCSA Model CDL Manual Section 2 cover to cover, then re-read it focused on numbers — speeds, distances, weights, and pressures. Use the practice questions in this category to drill those numeric thresholds until you can answer without hesitation.

Related General practice questions

• Q39. When descending a long downgrade you should:
• Q52. When making a right turn at an intersection, you should:
• Q1. What is the most frequent cause of crashes involving commercial motor vehicles?
• Q14. Total stopping distance equals:
• Q27. When approaching a railroad crossing, you should look both ways at least:

Continue your CDL preparation

The General Knowledge portion of the CDL knowledge exam covers more than this single question. Use this site's full General Knowledge bank to drill every topic, then test yourself with one of our state-specific practice sets to confirm you are ready for the actual DMV exam in your state. Always check your state's CDL handbook for any local addenda before the test day.

If you are still building your overall CDL foundation, start with the General Knowledge bank — every CDL applicant must pass it — and then work outward to the endorsements you plan to add.