Curfew hours & holiday restrictions

Holiday restrictions

Vehicles operating under special motor vehicle permit (PDF 256KB) for overweight/over dimensional, except as provided for in WAC 468-38-075, may be restricted from the state highways on the holidays of New Year's Day, Memorial Day, Independence Day, Labor Day, Thanksgiving Day and the day after Thanksgiving, Christmas Day, and commencing at noon of the day preceding said holidays.

• The day before New Year’s Day starting at noon and New Year's Day
• The day before Memorial Day starting at noon and Memorial Day
• The day before Independence Day starting at noon and Independence Day
• The day before Labor Day starting at noon and Labor Day
• The day before Thanksgiving Day starting at noon, Thanksgiving Day and the day after Thanksgiving
• The day before Christmas starting at noon and Christmas Day

Pilot/escort vehicle requirements

A pilot/escort vehicle and operator must comply with the requirements of WAC 468-38-100 Escort vehicle requirements.

Nighttime movements

A vehicle or vehicle combinations not exceeding the defined envelope of 12 feet wide, 14 feet 6 inches high and 105 feet long, including legal overhang(s), may move at night. A vehicle or vehicle combination which exceeds the defined envelope may also be permitted to move at night on state highways subject to Department preferred

hours/routes of travel, and must have “Nighttime movement approved” stated on permits. All night moves must comply with published curfew restrictions. Night means one-half hour after sunset to one-half hour before sunrise. Vehicle and load must have proper lighting (49 CFR 393.11).

Winter road restrictions

Movement by permit is prohibited in areas where any of the following signs are displayed: “TRACTION ADVISORY OVERSIZE VEHICLES PROHIBITED”, VEHICLES OVER 10,000GVWR CHAINS REQUIRED”, and “ALL VEHICLES CHAINS REQUIRED EXCEPT ALL-WHEEL DRIVE” except as specified in WAC 468-38-075.

Commuter curfew hours: (Monday through Friday only)

Vehicles operating under a Special Motor Vehicle Permit that are required to display “Oversize Load” signs are restricted from the following areas during the listed times. Exception: Vehicles with over dimension in width only and do not exceed the width limits of the table are not subject to curfew hours. Over weight is not a factor in this restriction unless the vehicle cannot maintain the speed of surrounding traffic.

Special motor vehicle permit regulations and conditions 560-002 (PDF 256KB)