No U-Turn
- Shape
- Square
- Color
- Black arrow, red circle and slash
- Meaning
- U-turns are not allowed.
- Required driver action
- Continue and turn around legally elsewhere.
- CDL relevance
- Large vehicles should avoid U-turns in general.
Source: FHWA — Manual on Uniform Traffic Control Devices (MUTCD) (11th Edition (December 2023)). Sign images are original simplified illustrations for study, not official MUTCD artwork.