When driving behind another vehicle, under good conditions, you should allow at least one second between your vehicle and the vehicle ahead for each ____ feet of your vehicle length.
Answer: B
10
When traveling less than 40 mph, allow at least 1 second of space between you and the vehicle ahead of you for every 10 feet of your vehicle length. When over 40 mph add an additional second.
All choices
- A30
- B10
- C20
Why the other answers are wrong
A. 30
Choice A is wrong because the correct spacing is one second per 10 feet of vehicle length, not 30 feet.
C. 20
Choice C is wrong because the rule specifies 10 feet per second, not 20 feet.
CDL Combination Vehicles Test Info
Questions on Exam
20
Passing Score
80%
Time Limit
Typically 30 minutes; varies by testing location
The Combination Vehicles test content is federally standardized, so this question applies in every state. Age limits, fees, and testing procedures do vary — check your state's CDL requirements.
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