WASHINGTON STATE PILOT CAR REGULATIONS

When Permit Is Needed
Over 8’6″ wide,Over 14′ high,Trailer over 53′ long

Times of Movement
1/2 hour before sunrise to 1/2 hour after sunset Mon-Thurs & Fri. until 3:00 pm.
Overweight-only 24-7
Sat. all day, Sun. until noon
Travel prohibited on the following holidays: New Years Day, Memorial Day, July 4th, Labor Day, Thanksgiving, Christmas; prohibition includes: a) the afternoon prior if the holiday falls on a weekday, b) the preceding Friday or the following Monday if the holiday falls on a Saturday or Sunday (Additionally, the State Permit Office will be closed on the above holidays as well as Martin Luther King Day, President’s Day and Veteran’s Day)

When Pilot/Escort Vehicle is Required

(Additional pilot cars may be required based on situation)
http://apps.leg.wa.gov/WAC/default.aspx?cite=468-38-100
2-lane highways:
Width-over 11′-2 (front & rear)
Over 105′ long (or rear overhang exceeds 1/3 total length)-1 rear
Over 14’6″ high-1 front + county or city authorization
Front overhang (depending on route)-1 rear
The truck driver can’t see 200’ to the rear of the load w/ mirrors
Multi-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 w/high pole + county to city authorization
Front overhang over 20′-1 front
Rear overhang greater than 20′-1 rear
The truck driver can’t see 200’ to the rear of the load w/ mirrors
Mobile homes:
Over 15′ high-1 front
Farm implements:
Width-over 12’6″ on 2-lane state highways-2 (front & rear)
Width-over 14′ on multiple-lane state highways-1 rear

Dept. of Transportation Permits Office
Hours: 7am-5pm PT
921 Lakeridge Way; PO Box 47367
Olympia, WA 98504-7367
(360)704-6340; Fax: (360)704-6350
http://www.wsdot.wa.gov/commercialvehicle/