R11-1 — Keep Off Median
Sign Specifications
| Code | R11-1 |
|---|---|
| Name | Keep Off Median |
| Category | Regulatory |
| Shape | Rectangle |
| Color | White / black (with red where applicable) |
| CA status | Recognized in the California MUTCD (2026) |
| MUTCD reference | § 6F.27 (MUTCD 11th Edition) |
| CA MUTCD reference | California MUTCD (2026) |
What This Sign Means
The R11-1 Keep Off Median sign is a white rectangle with a black legend. It is a regulatory sign that communicates a road or lane closure to road users.
California Field Use
- Placed at full or partial closures, typically with barricades.
- Paired with detour signing to route traffic around the closure.
Where It Goes on a TCP
Activity / termination area — at the closure point, with advance signing and barricades.
MUTCD Requirements
The R11-1 Keep Off Median is addressed under Part 6 (Temporary Traffic Control) of the MUTCD 11th Edition (MUTCD § 6F.27). Read the governing standard, guidance, option, and support text in the official MUTCD before applying it.
California Requirements
California adopts this sign through the California MUTCD, sometimes with state-specific sizing or application notes. A common conventional-road size is 48 x 30 in; larger sizes apply on expressways and freeways. Confirm the size and application for your facility against the current CA MUTCD (2026) and the Caltrans sign specifications and Standard Plans.
| Application | Standard Size |
|---|---|
| Conventional Road | 48 x 30 in |
| Minimum | 30 x 18 in |
Common Plan Review Comments
- Closure not paired with an approved detour.
- Barricade type/quantity not specified.
- Advance closure signing missing.
Compliance Notes
- Closure devices and detour match the plan.
- Advance signing present.
Related Signs
Related Compliance Topics
Learn more in Lane Closures and Detours.
This is an educational reference only. Always verify sign selection, size, placement, and application against the current CA MUTCD 2026, Caltrans sign specifications, Standard Plans, project documents, and the reviewing agency's requirements.