Speed Limit
- Shape
- Rectangle
- Color
- Black on white
- Meaning
- The maximum legal speed under ideal conditions.
- Required driver action
- Do not exceed it, and drive slower in bad weather, heavy traffic or work zones.
- CDL relevance
- Some states post lower speed limits for trucks.
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.