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Class W, Warning Signs

Warning signs provide an advance indication of conditions on or adjacent to a road that are potentially hazardous to drivers.

  • WA: Physical conditions signs indicate features or conditions of the road itself.
  • WB: Traffic regulations ahead signs provide an advance warning of a traffic regulation on a road.
  • WC: Intermittent or moving hazard signs indicate the possibility of a situation that may require a driver response.
  • WD: Used to regulate, warn and guide drivers in work zones where construction, maintenance or utility activities, or other temporary or unusual conditions are on or adjacent to the road.