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New Hampshire DOT Regulations for Oversize/Overweight Load Flags/Banners/Signs/Lights, Running Hours and Holiday Restrictions

For All State Regulations, See:

New Hampshire Oversize / Overweight Regulations

Running Hours and Holiday Restrictions

One-half hour before sunrise to one-half hour after sunset, Monday through Friday. No OS/OW permit travel on weekends and New Hampshire State Holidays  (New Year's Day, Martin Luther King Jr. Day, Washington's Birthday, Memorial Day, Independence Day, Labor Day, Columbus Day, Veteran's Day, Thanksgiving day, Day after Thanksgiving, Christmas Day). 

"Oversized Load" Banner Regulations and Requirements

“Oversize Load” sign required on front of an oversize vehicle and on the rear of the vehicle or load. Size: 7' long, 18" high Letters: Black, 10" high, 1.4" brushstroke Background: Yellow

Flag Requirements

The extremities of all oversize loads shall be marked longitudinally and laterally by fluorescent red, fluorescent orange, at least 18 inches square; least 4, and up to 6, flags mounted at the widest extremity and corners of the load.

Warning Lights: Color and Placement

Hauling vehicle must have operating top mounted flashing or strobe amber light visible for 1000'.

Source of Information:

New Hampshire DOT Par 304 Overweight and Overdimension Vehicle Permits

What is considered as "Oversized Load" in New Hampshire?

Dimensions: Width: 8' 6" Height: 13' 6" Semi Trailer Length: 53' (non-designated Hwys: 48) Maximum Length: 110' Legal Overhang: Front/Rear: 10'

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