Warning Road Sign (W7-4)
Runaway Truck Ramp (Entry Point) Sign Meaning & Driving Rules
Marks the immediate entrance point of an emergency runaway vehicle escape ramp.
Required Driver Action & Right-of-Way Protocol
Steer into the center of the gravel bed if brakes have failed. Standard vehicles must keep clear.
Detailed Overview & Purpose
The Runaway Truck Ramp sign (W7-4) marks the exact turn-off point for a runaway vehicle arrester bed. It is equipped with high-visibility markings and lighting.
Key Standard & Origin: Gravel arrester beds are filled with loose, rounded pea gravel that sinks vehicle wheels up to their axles to dissipate kinetic energy.
Where You'll Find This Sign
At the entrance of mountain emergency truck escape beds.
Common Driver Mistakes to Avoid
Standard vehicles using escape ramps as scenic turnouts.
How This Sign Appears on the DMV Knowledge & Road Test
Featured in emergency procedures and brake failure test modules.
Legal Penalties and Moving Violations
Unauthorized use or parking in an escape ramp is a misdemeanor.
When you encounter the official Runaway Truck Ramp (Entry Point) (W7-4) on a roadway, what is your legal duty?
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