Temporary Traffic Control Signs
Work-zone signs used in California temporary traffic control plans — advance warning, lane and shoulder closures, flaggers, workers, road closures, and detours.
Temporary traffic control (TTC) signs warn, guide, and regulate road users through and around a work zone so that drivers, pedestrians, bicyclists, and workers can move through safely. In California, TTC signs follow the CA MUTCD 2026 (effective January 18, 2026) — California's adoption of the national MUTCD with state-specific modifications — together with the Caltrans sign specifications and Standard Plans.
Showing 1–24 of 79 Signs
Complete sign index — all 79 signs in Temporary Traffic Control Signs
- G20-1
- G20-2
- G20-4
- G20-5aP
- M4-8
- M4-9
- M4-9a
- M4-9b
- M4-9b(CA)
- M4-9L
- OM1-3
- OM2-2V
- OM3-L
- R1-7a
- R5-1
- R5-2
- R6-1
- R6-2
- R9-3a
- R9-6
- R9-8
- R9-9
- R9-10
- R9-11
- R9-11a
- R11-2
- R11-2a
- R11-2c
- R11-3a
- R11-3b
- R11-4
- W1-4b
- W1-4c
- W3-3
- W3-4
- W4-1
- W4-2L
- W4-2R
- W5-4
- W6-4
- W8-24
- W9-2
- W9-2a
- W9-5a
- W20-1
- W20-1(CA)
- W20-1b
- W20-2
- W20-2a
- W20-3
- W20-3a
- W20-4
- W20-5
- W20-5a
- W20-5b
- W20-5L
- W20-5R
- W20-7
- W20-7(CA)
- W20-7a
- W20-8
- W21-1
- W21-1a
- W21-2
- W21-3
- W21-4
- W21-5
- W21-5a
- W21-5b
- W21-6
- W21-7
- W21-8
- W22-1
- W22-3
- W23-1
- W23-2
- W24-1
- W24-1a
- W24-1b
Related Resources
California Notes
View state-specific considerations and adoptions for Temporary Traffic Control Signs.
Explore California NotesWork Zone Compliance
Ensure your signs meet MUTCD and Caltrans requirements.
Visit WorkZoneCompliance.comDownload Guide
Learn about file formats, uses, and best practices for sign downloads.
View Download GuideFrequently Asked Questions
What is the difference between the federal MUTCD and the CA MUTCD?
The federal MUTCD is the national standard published by FHWA. California adopts it as the CA MUTCD with state-specific modifications, and the CA MUTCD is what governs traffic control device use on California streets and highways. For California work, always verify against the CA MUTCD 2026, not the federal manual alone.
How far apart should advance warning signs be placed?
Advance warning sign spacing depends on the road type and posted speed. The CA MUTCD provides spacing tables (commonly referenced as A/B/C distances) — shorter on low-speed urban streets and longer on high-speed highways. Always set spacing from the CA MUTCD for the specific facility rather than a single fixed number.
Do temporary traffic control signs have to be orange?
Most warning and guide signs used in TTC zones use a fluorescent orange background with a black legend. Regulatory signs (such as ROAD CLOSED, STOP, or speed limits) keep their standard regulatory colors. Object markers and some guide signs use other standard colors.
Who reviews traffic control plans in Los Angeles?
For work in City of LA right-of-way, StreetsLA (Bureau of Street Services) and the Bureau of Engineering (BOE) may review the TCP. For state highways in LA County, Caltrans District 7 reviews the encroachment permit and TCP. County roads are permitted by LA County DPW. Requirements can exceed CA MUTCD minimums.
Can I download a free quick reference of these signs?
Yes. Use the Download Reference Sheet button above to get a free, printable PDF of the California temporary traffic control signs — no account or login required.
Need temporary traffic control signs for a California work zone?
Public Ready can help you rent, purchase, or coordinate the TTC signs in this list — including TCP sign legends and project-ready sign packages for California public right-of-way work.