- MUTCD
- W7-4eP
- Category
- warning
- Color
- yellow
- Shape
- rectangle horizontal
National · MUTCD Sign Reference
Gravel (Plaque)
Supplemental plaque identifying the arrester material at the truck escape ramp as gravel.
A supplemental plaque used with a runaway truck ramp warning to tell drivers the arrester bed is filled with gravel. Gravel beds slow runaway trucks by friction and rolling resistance against the loose aggregate.
Related signs
Wikimedia Commons: File:MUTCD W7-4eP.svg (Public domain)