Hazardous Material Prohibited
- Şekil
- Square
- Reňk
- Red circle and slash over HM
- Manysy
- Vehicles carrying hazardous materials are prohibited.
- Sürüjiniň hereketi
- If placarded, do not enter; use an approved route.
- CDL üçin ähmiýeti
- Often posted before tunnels and some bridges.
Çeşme: FHWA — Manual on Uniform Traffic Control Devices (MUTCD) (11th Edition (December 2023)). Sign images are original simplified illustrations for study, not official MUTCD artwork.