United States Permit Test Coach
Work zonesQuestion 170 of 223
Orange diamond sign with the black words ONE LANE ROAD AHEAD

What will happen ahead when you see this sign?

  1. Drivers from both directions share one lane
  2. Both lanes of the road are closed
  3. One lane is open for trucks only
  4. Traffic goes one way on two lanes
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Correct answer: Drivers from both directions share one lane

This sign is used only before the point where traffic in both directions must use one common lane. Be ready to wait your turn.

Source: Manual on Uniform Traffic Control Devices for Streets and Highways (MUTCD), 11th Edition with Revision 1 (FHWA, December 2025), Section 6H.06 ONE LANE ROAD Sign (W20-4), page 846

Practice work zones

Questions last reviewed: 18 October 2026