School Zones, Railways & Work Areas
What does this sign warn you about?
- AOne lane closes, and other lanes in your direction stay open.
- BThe road ahead is closed, so you must take a detour.
- CTraffic from both directions must share one lane ahead.
- DThe road narrows, but each direction keeps its own lane.
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Correct answer: C. Traffic from both directions must share one lane ahead.
Why
This orange work-zone sign warns that in 1000 feet, traffic from both directions must use one common lane. Slow down and be ready to stop. A flagger, a temporary signal, or a STOP or YIELD sign usually controls who goes first, so wait for your turn. A LEFT or RIGHT LANE CLOSED sign is different: it means one lane in your direction closes while other lanes stay open.
Why the other answers are not correct
- A. A closed lane on a road with more lanes in your direction has a RIGHT or LEFT LANE CLOSED sign.
- B. A closed road has a ROAD CLOSED sign; here the road stays open with one lane.
- D. A narrower road with a lane for each direction has a ROAD NARROWS sign; here only one lane is left.
Verified against Manual on Uniform Traffic Control Devices for Streets and Highways, 11th Edition with Revision 1 · Section 6H.06 ONE LANE ROAD Sign (W20-4) · p. 846
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