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Road Conditions & State Highways

CalTRANS Information

Local Web CAMS

Road Conditions by Phone

  • CHP Yreka: (530) 842-4438
  • Weather Bureau: (530) 221-5613
  • Cal Trans: (800) 427-7623
  • Oregon Roads: (503) 588-2941

Snow Chain Requirements

  • R1 - Chains, traction devices or snow tires are required on the drive axle of all vehicles except four-wheel/all-wheel drive vehicles.
  • R2 - Chains or traction devices are required on all vehicles except four-wheel/all-wheel drive vehicles with snow-tread tires on all four-wheels. NOTE: four-wheel/all-wheel drive vehicles must carry traction devices in chain control areas.
  • R3 - Chains required - Chains or traction devices are required on all vehicles, no exceptions.
  • R-1 and R-2 are the most common chain controls. The highway will often be closed before an R-3 control is imposed.