Regulatory signsQuestion 20 of 223
White sign with a black left-turn arrow above the word ONLY

This sign is over your lane at an intersection. What must you do?

  1. Go straight from this lane
  2. Turn left or go straight
  3. Turn left from this lane
  4. Turn left only after you stop
Show answer

Correct answer: Turn left from this lane

A lane sign with the word ONLY shows the single movement that you must make from that lane.

Source: Manual on Uniform Traffic Control Devices for Streets and Highways (MUTCD), 11th Edition with Revision 1 (FHWA, December 2025), Section 2B.28 Mandatory Movement Lane Control Signs (R3-5, R3-5a, R3-7, R3-19 Series,, page 133

Practice regulatory signs

Questions last reviewed: 18 October 2026