Operating Hours, Restricted Travel, and Holiday Restrictions
Travel is permitted from sunrise to sunset, and no weekend travel is permitted. There may be no travel on New Year's, Good Friday, Memorial Day, Independence Day, Labor Day, Thanksgiving, and Christmas. All movement must stop at 12:00 pm/noon the day before a holiday and not resume until12:00pm/noon afterward.
These restrictions may vary from year to year, so you must ask the Permit Office to verify for you.
Signs, Flags, and Lights Requirements
Signs, flags, and lights may be required for oversized loads or super loads. Companies must follow these guidelines to ensure the safety of others on the road.
Signs
“Oversize Load” signs are to be displayed on every vehicle and load that exceeds the legal width, length, or rear overhang in the state of Delaware.
Flags
With vehicles and loads that exceed legal width, warning flags are required. Flags are required at four corners and/or at the widest points for widths over 102 feet. Signs and flags must be at the front and the rear at four corners and/or the widest points.
They must be at least 18 inches square and red or orange fluorescent in color. Make sure that flags are securely fastened to the vehicle or the load by at least one corner of the flag. Or they may be securely mounted on a staff.
If the rear overhang exceeds 4 feet and the extreme rear of the load is 2 feet wide or less, one flag is required at the extreme rear of the load.
Obtaining a permit
Single trip oversize and overweight permits are valid for five days. Other permit types include superload permits, annual permits, and multi-trip permits, used for cranes, double trailers, or zero-emission buses.
Companies can order permits for overweight/oversize by calling (888) 799-8858 or by visiting
https://deldot.gov/ 
