Massachusetts Class D Learner's Permit Exam
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In good road conditions and moderate traffic, how can you check a basic following gap?
Blue A follows silver B in good conditions. A fixed roadside post is level with B’s rear in this starting frame.
Correct answer: Pick a fixed point; reach it at least three seconds after the car ahead.
Why
In good road conditions and moderate traffic, choose a fixed point. Begin counting when the vehicle ahead passes it; you should not reach it before three seconds have elapsed. The handbook calls this a minimum guide for those conditions, not a distance guaranteed safe in every situation. Leave more time when conditions or the vehicle ahead require it.
Verified against Massachusetts Driver’s Manual · Safe distances around your car · p. 51
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