Department of Transportation Commercial Vehicle Services
P.O. Box 47367 Olympia, WA 98504-7367
Commercial Vehicle Services
7345 Linderson Way SW
Tumwater, WA 98504-7367
Permits: (360) 704-6340

Hours of Business

Mon-Fri 8:00 AM - 4:30 PM | Closed 12:00 - 12:30 PM (Pacific time)


When escorts are needed # of escorts
On 2-lane highways  
– Width over 11′ 2 (Front and Rear)
– Length over 105′ 1 Rear
– Height over 14’6″ (county or city authorizations necessary for detours to accommodate move) 1 Front with high pole
– Front overhang greater than 20′ 1 Front
– Rear overhang greater than 20′ 1 Rear
On multiple lane highways  
– Width over 14′ – 20′ 1 Rear
– Width over 20′ 2 (Front & Rear)
– Length over 125′ 1 Rear
– Height over 14’6″ 1 Front with height pole
– Height over 14’6″ and width over 12′ 1 Front with high pole + 1 Rear

Super loads:

A super load is a vehicle or combination with a non-divisible load exceeding 16′ wide, 16′ high, 125′ long (of load length) or 200,000 lbs. (tandem axles 43,000 lbs. plus depending on trailer axle width).

Escort vehicle requirements can differ significantly by state in terms of mandatory driver qualifications, training, certifications, vehicle weights, obligatory signage/flags/lighting, necessary onboard equipment, and more. The ODS team can provide you with all additional requirements specific to your route.

Operating Times

One-half hour before sunrise to one-half hour after sunset seven days except curfew hours.

Travel is permitted Saturday and Sunday all day.

Vehicles operating overweight only with legal dimensions may travel 7 days a week, 24 hours a day provided they can maintain speed with surrounding traffic.

Night travel

  • A vehicle or vehicle combinations not exceeding the defined envelope of 12′ wide, 14′ 6″ high and 105′ 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.
  • All night moves must comply with published curfew restriction.
  • Night means one-half hour after sunset to one-half hour before sunrise.
  • Vehicle and load must have proper lighting (49 CFR 393.11).

Restricted travel:

From Monday through Friday, vehicles operating under a Special Motor Vehicle Permit are subject to width-related restrictions (generally 9′ or 10′) in the following areas. Travel restrictions are generally 3-4 hour periods around higher traffic times in morning and afternoon/evening and do not apply to vehicles or loads not exceeding these widths and/or overweight vehicles that can maintain the speed of surrounding traffic flow.

  • Seatle-Everett
  • Tacoma
  • Olymia
  • Vancouver
  • Kelso
  • Spokane


Vehicles operating under special permit for oversize/overdimensional may be restricted from 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 the holidays.