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

Running Hours and Holiday Restrictions

For loads up to 150,000 'b., 12' wide, 14' 6" high, and 90' long may move from Monday 12:01 to Saturday 12pm (noon) EST. All other loads are 12 hour before sunrise to 1/2 hour after sunset. Over dimensional vehicles are not permitted during the following holidays: New Year’s Day, Memorial Day, Independence Day, Labor Day, Thanksgiving Day and Christmas Day

"Oversized Load" Banner Regulations and Requirements

"WIDE LOAD" or "OVERSIZE LOAD" signs are required if load exceed 9' in width. Warning signs are required on the front and back of all oversize loads. Size: 7' long, 18" high Letters Black, 10" high, 1 5/8" brushstroke Background: yellow

Flag Requirements

All Oversize Loads: Four flags 18" square bright red flags on all four corners of the extremities of other over width load.

Warning Lights: Color and Placement

2 red lights shall be displayed on a rear overhang exceeding 4’ indicating the widest part of the overhang and 1 on each side of the load. 

Source of Information:

Maryland Overdimensional Permit Limitations

What is considered as "Oversized Load" in Maryland?

"DIMENSIONS: Width: 8' 6"' Height: 13' 6" Length: Semi-trailer 53' Overall: 74' (Indivisible loads up to 70' may be moved without permit in daylight hours.) Legal Overhang: Front 3', Rear 6' (flags, lamps required for load beyond 4' of rear). WEIGHTS: Single Axle: 20,000 lb. Tandem axle: 34,000 lb. Tridem: 42,500 lb. Max Gross Weight: 80,000 lb.

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