For All State Regulations, See:
One-half hour before sunrise to one-half hour after sunset seven days a week from Labor Day to Memorial Day. Memorial Day to Labor Day, Saturday travel only until noon and none on Sunday, except not exceeding 14 feet wide can travel weekend, daytime hours only on Interstate highways west of the summit of the Cascade Mountains, and on any authorized highway east of the summit of the Cascade Mountains. Up to 10 feet wide on “green” routes and up to 12 feet wide on Interstates are allowed night travel. Local restriction apply in Portland, Eugene, Grants Pass and other areas.
“Oversize Load” are required on front of tractor and rear of load or trailer on all wide loads and vehicle/loads over 80′ long. Size: 7' wide, 18" high Letters: Black, 10" high, Background: Yellow.
Red/fluorescent orange flag not less than 18 inches square attached to the outermost extremity of the load during daylight hours.
End load lights are required for operation when visibility is less than 500 feet due to darkness or reduced visibilities. Traveling at night with a wide load, the outermost extremities must be illuminated by lamps or marker lights (amber forward and intermediate side markers, red rearward markers). When width exceeds 10′ on a two-lane highway, or 12′ on a multi-lane highway, amber warning lights are required, on the cab (unless operating with a minimum of two pilot cars).
Dimensions: Width: 8' 6" Height: 14' Semi Trailer Length: 56' Maximum Length: 75' (combinations) Overhang: Front 4' , Rear 5'