Construction MUTCD W20-1

Road Work Ahead Sign — Meaning

By DMV Master Editorial Team Updated Also: Construction Ahead, Workzone Ahead
Road Work Ahead Sign
Category
Construction
Shape
Diamond
Colors
Orange, Black
Text
ROAD WORK AHEAD
MUTCD Code
W20-1

What does the Road Work Ahead Sign mean?

The Road Work Ahead sign is an orange diamond reading "ROAD WORK AHEAD." It warns drivers that they are approaching a construction zone where workers, equipment, lane closures, or detours may exist. Orange is reserved for temporary traffic control situations.

What to do when you see this sign

  1. 1

    Reduce speed immediately

  2. 2

    Watch for workers, equipment, and lane shifts

  3. 3

    Be prepared for sudden stops

  4. 4

    Obey flagger signals if present

  5. 5

    Increase following distance — the vehicle ahead may stop suddenly

Where you'll see it

Test trap: don't get caught by this

Speeding fines are typically DOUBLED in active work zones, even if no workers are visible. Some states (like Indiana) double fines whenever workers are present, regardless of vehicle speed.

Frequently asked questions

When does the work zone speed limit apply?
Whenever the orange signs are posted, even if no workers are visible. Reduced speeds are for safety of any workers and the integrity of the work area.
What if I see no workers in a marked work zone?
Treat it as active. Workers may be in trenches, on the other side, or not yet arrived/departed for the day. Speed limits and lane shifts remain in effect.
Why are work zone fines doubled?
Work zones are statistically the most dangerous areas of highways for both drivers and workers. Doubled fines are a deterrent against the risk-taking that causes most work-zone crashes.

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