Driver's License Test Prep
New York Practice Road Markings

Your lane is separated from the next by a single solid line. When are you allowed to pass another vehicle?

  1. A.
    Never: a single solid line always prohibits passing
  2. B.
    Only when obstructions or traffic require it Correct
  3. C.
    Any time traffic ahead is moving slowly
  4. D.
    Only during daylight and with a turn signal on
The Why

The answer is "Only when obstructions or traffic require it"

A single solid line permits passing only when obstructions in the road or traffic conditions make it necessary. Choice A is the tempting miss: a driver groups every solid line with the double-solid rule, on the mistaken idea that solid always means no passing.

Why the others miss

The traps in the wrong answers

A. Never: a single solid line always prohibits passing

A single solid line still allows passing under limited conditions. This answer treats every solid line as an absolute ban, borrowing the double-solid rule for the single one.

C. Any time traffic ahead is moving slowly

Slow traffic alone is not the trigger the manual sets for a single solid line. This answer reaches for the everyday reason drivers pass (a slow car ahead) rather than the narrower rule the manual writes.

D. Only during daylight and with a turn signal on

The manual sets no daylight-only or signal-only condition on a single solid line. This answer invents cautious extras that the manual never puts on the line.

The Rule

This question tests your knowledge of Road Markings in New York. Source: New York State Driver's Manual, "PAVEMENT MARKINGS: One solid line," p.32..

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