Idaho
Transportation Department
Over Legal Permit Office
P.O. Box 7129
3311 W. State Street
Boise, ID 83707
PHONE: (208) 334-8420
Intrastate: (800) 662-7133

Hours of Business

7:30 AM - 5:00 PM (Mountain time)

Escorts

The required number and placement of pilot car escorts in Idaho is determined by route color codes.

When escorts are needed & number of escorts required

On red coded routes

  • Width over 8’7″ to 10′ requires 1 escort (Front)
  • Width over 10′ to 12’6″ requires 2 escorts (Front and Rear)
  • Length over 75′ requires 1 escort (Front)
  • If over width and over 75′ length, 2 escorts are required (Front and Rear)

On black coded routes

Width over 12′ to 14′ requires 1 escort (Front)
Width over 14′ to 14’6″ requires 2 escorts (Front and Rear)
Length over 100′ requires 1 escort (Front)
If over 12′ to 14’6″ wide and over 100′ in length, 2 escorts are required (Front and Rear)

On interstate system

  • Height over 15′ requires 1 escort (Rear)

Night travel

Any overwidth load moving after dark on black coded routes, if width exceeds 10’, must also be preceded by such a pilot/escort vehicle. Any overwidth load moving after dark or on weekends on a red coded route of the Pilot/Escort Vehicle and Travel Time Requirements Map must be preceded by an escort vehicle displaying a rotating or flashing amber light to warn other traffic of the presence of the hazard.

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 until one-half hour after sunset. Loads not exceeding 10′ wide, 14’6″ high, 100′ long on 2-lane or 120′ on 4-lane may travel 24 hours a day. Oversize vehicles operating under authority of an overlegal permit which exceed 7’ of front overhang, on any vehicle in the combination, are restricted to daylight travel only on 2-lane, 2-way highways.

Black-coded Routes (majority of the state)

Loads not in excess of 10′ in width may travel 24 hours a day, 7 days a week. Loads over 10′ in width are permitted to travel during daylight hours 7 days a week (half hour before sunrise to half hour after sunset).

Weekend/Night Travel:

Red-Coded Routes. Daylight travel until 2pm on Friday, no Saturday, no Sunday. Due to low traffic volumes on these routes early in the mornings of Saturday and Sunday, single trip permits may be issued for dawn to 8am. If the movement is not completed by 8am, the permittee will be required to safely park and not proceed until the next day.

Black-Coded Routes. Loads not in excess of 10’ wide, 100’ long or 14’6” high may travel 24 hours per day, 7 days per week; loads in excess of 10’ wide, 100’ long or 14’6” high may travel daylight hours 7 days per week.

Interstate. Loads not in excess of 10’ wide, 120’ long or 14’6″ high may travel twenty-four (24) hours per day, seven (7) days per week; loads in excess of 10’ wide, 120’ long or 14’6” high may travel daylight hours, 7 days per week.

Emergency Movements. Permitted after dark and on weekends.

Restricted Travel

Vehicles and/or loads in excess of 13′ wide are prohibited from movement during heavy commuter traffic. Oversize permitted vehicles allowed to operate during hours of heavy commuter traffic shall be restricted to the furthest right-hand lane.

Idaho has numerous areas with heavy commuter traffic restrictions in place. The ODS team is standing by to guide you.

Holiday Travel

Holiday restrictions exist for Black and Red Code routes and Interstate Routes on New Year’s Day, Memorial Day, Independence Day, Labor Day, Thanksgiving Day, and Christmas Day. Restrictions can be found at http://itd.idaho.gov/dmv/poe/HolidayRestrictions.htm.

Red-Coded Routes: No travel for any load after 2pm on the day preceding a holiday or holiday weekend. A holiday weekend occurs as 3 consecutive days, when a designated holiday occurs on a Friday or Monday, or when the designated holiday occurs on a Saturday or Sunday, in which case the preceding Friday or the following Monday shall be included in such 3-day holiday weekend. Travel may be resumed at dawn on the day following the holiday or holiday weekend. (4-5-00)

Black-Coded Routes and Interstate Routes: Loads in excess of 10’ wide, 100’ long or 14’6” high may not travel after 4:00pm on the day