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U.S. Road Signs

Regulatory, Lane & Parking Signs

This sign faces you as you reach the end of a side street. Which way may you turn onto the cross street?

A white vertical rectangle sign with the black words ONE WAY on two lines above a black arrow that points left.
  1. AAgainst the arrow, because the arrow shows where traffic comes from.
  2. BIn the direction the arrow points, with the flow of traffic.
  3. CLeft or right, as the sign is meant for drivers already on that street.
  4. DYou may not turn onto it; go straight across instead.
Show the answer and the explanation

Correct answer: B. In the direction the arrow points, with the flow of traffic.

Why

The vertical ONE WAY sign has the same meaning as the horizontal one: traffic on that street may travel only in the direction of the arrow. When you turn onto a one-way street, turn so that you travel the way the arrow points. A turn the other way puts you head-on with traffic. Do not confuse it with the DO NOT ENTER sign, which tells you not to enter a street from where you are.

Why the other answers are not correct

  • A. Wrong: the arrow shows the direction that traffic travels on the one-way street, so turning against it means driving the wrong way.
  • C. Wrong: ONE WAY signs at the corners face drivers who enter or cross the one-way street, so the sign applies to you.
  • D. Wrong: the sign does not close the street to you; you may turn onto it in the direction of the arrow.

Verified against Manual on Uniform Traffic Control Devices for Streets and Highways, 11th Edition with Revision 1 · Section 2B.49 ONE WAY Signs (R6-1 and R6-2) · p. 155

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