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Work Zone Compliance โ€” A Public Ready Knowledge Resource
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  • Temporary Traffic Control
  • MUTCD Overview
  • Traffic Control Devices
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  • Lane Closures and Detours
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  • Public Right-of-Way Work
  • Permits and Documentation
  • Common Compliance Issues
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Home / Signs / Detour Signs

Detour Signs

Detour signs route traffic around closed or restricted roadways. The detour signs below appear in California work zones โ€” select any sign for compliance guidance, or view the detailed charts.

๐Ÿ“Š View Detour Signs on the Sign Chart โ†’
  • W20-2 Detour Ahead โ€” MUTCD traffic control sign
    W20-2 Detour Ahead
    W20-2

    Detour Ahead

    Warning Signs
  • M4-8 Detour โ€” MUTCD traffic control sign
    M4-8 Detour
    M4-8

    Detour

    Guide Signs
  • M4-9 Detour Arrow โ€” MUTCD traffic control sign
    M4-9 Detour Arrow
    M4-9

    Detour Arrow

    Guide Signs
  • M4-9a End Detour โ€” MUTCD traffic control sign
    M4-9a End Detour
    M4-9a

    End Detour

    Guide Signs
  • M4-9b Pedestrian Detour โ€” MUTCD traffic control sign
    M4-9b Pedestrian Detour
    M4-9b

    Pedestrian Detour

    Guide Signs
  • M4-9b(CA) Pedestrian Detour (California) โ€” MUTCD traffic control sign
    M4-9b(CA) Pedestrian Detour (California)
    M4-9b(CA)

    Pedestrian Detour (California)

    Guide Signs
Work Zone Compliance

An educational resource for work zone compliance, temporary traffic control, public right-of-way readiness, and related field planning concepts. Requirements vary by jurisdiction, project type, agency, roadway, permit condition, and approved plan.

Work Zone Compliance is a Public Ready knowledge resource.

Public Ready ยท (323) 900-9824

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Topics

  • Work Zone Basics
  • Temporary Traffic Control
  • MUTCD Overview
  • Traffic Control Devices
  • Work Zone Layout
  • Lane Closures and Detours

More Topics

  • Pedestrian Access
  • Flagging Operations
  • Public Right-of-Way Work
  • Permits and Documentation
  • Common Compliance Issues
  • Glossary

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Work Zone Compliance is a Public Ready knowledge resource. Public Ready supports traffic control plan coordination, permit readiness, and agency coordination across Southern California.

ยฉ 2026 WorkZoneCompliance.com โ€” Educational reference only. Not legal advice. Not engineering advice. Not agency approval.