Skip to content

Road Machinery Ahead: What It Means & What To Do

Road Machinery Ahead (W21-3) - diamond orange with black construction sign: Heavy machinery may be operating on or near the road
MUTCD CodeW21-3
CategoryConstruction Signs
ShapeDiamond
ColorOrange with black

What Does the Road Machinery Ahead Mean?

Heavy machinery may be operating on or near the road.

About This Sign

This sign warns of construction equipment that may be moving slowly or blocking lanes.

Other Construction Signs

Practice Road Sign Questions

Test your knowledge of road signs with free DMV practice tests.

Road Machinery Ahead - DMV Road Sign Meaning & Test Guide | DMV IQ