Chapter 6P – Typical Applications January 18, 2026
Part 6 Temporary Traffic Control
Notes for Figure 6P-20 —Typical Application 20
Detour for a Closed Street
Guidance:
1. This plan should be used for streets without posted route numbers.
2. On multi-lane streets, Detour signs with an Advance Turn Arrow should be used in advance of a turn.
Option:
3. Flashing warning lights and/or flags may be used to call attention to the advance warning signs.
4. Flashing warning lights may be used on Type 3 Barricades.
5. Detour signs may be located on the far side of intersections. A Detour sign with an advance arrow may be used in advance of a turn.
6. A Street Name sign may be mounted with the Detour sign. The Street Name sign may be either white on green or black on orange.
Standard:
7. When used, the Street Name sign shall be placed above the Detour sign.
Support:
8. Figure 6P-9 contains the information for detouring a numbered highway.
California MUTCD 2026 Edition
(FHWA’s MUTCD 2023 Edition, as amended for use in California)
EXHIBIT A
A
C
B
A
B
Notes: See Table 6P-2 for the meanings of
the symbols used in this figure.
See Table 6B-1 for the meanings of
the letter codes used in this figure.
M4-8a
M4-8a
R3-2
R3-2
W20-3
W20-2
R3-1
R3-1
M4-10R
M4-10L
R11-4
R11-2
R11-2
W20-3
W20-2
M4-9L
(modified)
M4-9L
(modified)
M4-9L
(modified)
M4-9R
(modified)
M4-9R
(modified)
M4-9R
(modified)
M4-9R
(modified)
M4-9L
(modified)
Typical Application 20
Figure 6P-20. Detour for a Closed Street (TA-20)
D3-1 D3-1
D3-1 D3-1
D3-1
D3-1
W20-1
W20-1
W20-1
W20-1
W20-1
W20-1
C
Chapter 6P – Typical Applications (Figures)
Part 6 Temporary Traffic Control
January 18, 2026 California MUTCD 2026 Edition
(FHWA’s MUTCD 2023 Edition, as amended for use in California)
EXHIBIT A