Road Signs
Shapes and colors.
13.1 Sign shapes and colors
| Shape | Meaning |
|---|---|
| Octagon | Stop |
| Inverted triangle | Yield |
| Pennant | No passing zone |
| Diamond | Warning |
| Pentagon | School zone / school crossing |
| Round | Railroad advance warning |
| Crossbuck | Railroad crossing |
| Color | Use |
|---|---|
| Red | Stop, yield, prohibition |
| Yellow | General warning |
| Orange | Temporary traffic control / work zones |
| Green | Guide and directions |
| Blue | Motorist services |
| Fluorescent yellow-green | School, pedestrian and bicycle warnings |
See the Road Sign Library for each sign.
Source: FHWA — Manual on Uniform Traffic Control Devices (MUTCD) (11th Edition (December 2023)), MUTCD Part 2. Updated: 2026-10-09