Detour Sign (M4-9L)
The detour sign is a rect h and its colour is orange. It is a work zone sign. Orange means workers and equipment on the road: fines are often doubled and posted limits are mandatory.
At a glance
| Shape | rect h |
|---|---|
| Color | orange |
| Category | Work zone signs |
| MUTCD code | M4-9L |
| Legend | DETOUR |
How the test asks about it
- 1.
An orange DETOUR sign directs you to:
Not quiteCorrect answer: A — A marked alternative route around a closure
A detour is a signed route around a closed section. Following the whole sequence of detour signs matters — leaving it partway usually strands you at the closure.
Navigation apps often try to route back to the closed road. The posted detour reflects a closure the map may not know about.
- 2.
What does this sign tell you to do?
Not quiteCorrect answer: C — Leave the normal route and follow the marked alternative in the direction of the arrow
A detour routes traffic around a section that is closed or blocked. Its orange background marks the arrangement as temporary, and further detour signs will carry you through each turn back to the normal route.
Turning off and then navigating your own way back. The detour is a signed sequence; leaving it usually means losing the route entirely.
Related signs
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