Construction MUTCD W20-2

Detour Sign — Meaning

By DMV Master Editorial Team Updated Also: DETOUR
Detour Sign
Category
Construction
Shape
Horizontal Rectangle
Colors
Orange, Black
Text
DETOUR
MUTCD Code
W20-2

What does the Detour Sign mean?

The Detour sign is an orange rectangle reading "DETOUR" with directional arrows. It indicates that drivers must follow an alternate route due to road closure, construction, or emergency. Follow detour signs sequentially to navigate the alternate route.

What to do when you see this sign

  1. 1

    Follow the detour route exactly as marked

  2. 2

    Watch for additional detour signs at every turn

  3. 3

    Do not attempt to bypass the detour or ignore closure barriers

  4. 4

    Detours often add significant time — plan accordingly

Where you'll see it

Test trap: don't get caught by this

Some drivers attempt to navigate around closures using GPS or memory, but DOTs close roads for valid safety reasons. Always follow the detour route, even if it adds miles or time.

Practice questions about the Detour Sign

Test your knowledge with real DMV-style questions, each with the correct answer and explanation.

States that test this sign

The Detour Sign appears in DMV practice tests for 50 states. Click any state to see its full DMV practice page.

Frequently asked questions

Why do detours sometimes add 10+ miles?
Because the closed road segment may be the only direct route between two points. Detours follow the next available connecting roads, which can be far less direct in rural or mountainous areas.
Can I ignore a detour and use a closed road?
No. Roads are closed for safety (active construction, structural failure, hazardous materials). Driving around barricades is illegal and can result in serious citations.
How do I know when the detour is over?
Watch for "End Detour" signs or rejoin the original route. GPS apps will recalculate once you're back on the main road.

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