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Montana Class D Knowledge Test Practice
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Passing target: 80% (24/30)
Freeways & High-Speed RoadsStandalone practice
You want to change lanes on a busy interstate. About how large a gap in the other lane should you look for?
A is in the right lane, beside a space between two cars traveling in the left lane.
Correct answer: About 4 seconds, which leaves 2 seconds in front and behind
Why
The manual calls for a gap of about 4 seconds for any lane change, for entering a roadway, and where two lanes merge into one. Do not squeeze into a small gap, because it can close fast and leave you boxed in. Signal early and check your mirrors and blind spot so you can judge the gap before you move.
Verified against Montana Driver Manual English · Sharing Space — Space to Merge · p. 76
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