Driver's License Test Prep
Square white panel with black border showing the letters 'HM' in black, overlaid by a red circle with a red diagonal slash.
MUTCD
R14-3
Category
regulatory
Color
white
Shape
square
National · MUTCD Sign Reference

Hazardous Materials Prohibited

Vehicles transporting hazardous materials are not allowed beyond this point.

Prohibits any vehicle carrying placarded hazardous materials from continuing on the route, typical at tunnels, sensitive bridges, and water-supply protection zones. HazMat drivers must use the designated alternate route.

In the same family

Related signs

Red octagon with white border and the word STOP in large white letters across the center.
Stop
Downward-pointing red triangle with a white interior triangle and the word YIELD in red letters.
Yield
Small red rectangular plaque with white border and the words ALL WAY in white letters.
All Way Plaque
Red circle on a square white background with the words DO NOT ENTER in white above and below a wide white horizontal bar.
Do Not Enter
Horizontal red rectangle with the words WRONG WAY stacked in large white letters.
Wrong Way
Source

Wikimedia Commons: File:MUTCD R14-3.svg (Public domain)

Free study plan

A free knowledge-test study plan

Pick your state and we'll send a short run of study emails for that test. The one-page cheat sheet is free to grab either way.

One email a few times a month. No spam, unsubscribe anytime. Privacy.