These are the Iowa state shipping regulations, limitations, rules and laws for the trucking of oversize and over weight loads over the roads and highways in the state of Iowa.



Iowa State Trucking Permit Regulations – oversize shipping and transport.

Iowa State Trucking information website:

Legal Loads.
Length: 53’ trailer
Weight:  GVW = 80,000 lbs. Steer 20,000 lbs.
Width: 8’ 6”
Height:  13’ 6”


Routine oversize shipping, trucking and transport permits.
Length:  120’
Weight:  5 axles 92,000 lbs., 6 axles., 7 axles 132,000 lbs.,
Width:  18’
Height:  16’

How to apply for trucking permits.
Iowa DOT
515-237-3264 Phone
515-237-3257 Fax
Permits are valid for 5 days.  Single trip oversize trucking permit costs $10.

Pilot Car – Escort Car Requirements.
Length: 80’ to 100’ must have revolving lights.  Over 120’ requires 1 rear pilot/escort vehicle. 10’ overhang requires flashing lights.
Weight: Over 80,000 lbs. GVW requires amber lights.
Width: On Primary Road  Over 12’     1 front pilot car escort vehicle is required. On 2 lane over 14’ one rear pilot car escort vehicle is required. On 4 lane over 14’6” one rear pilot car escort vehicle is required.  On Interstate over 16’6” one pilot car escort vehicle or lighting is required.
Height:  Over 14’4” requires 1 front pilot car escort vehicle with height pole.

Travel Restrictions.
Travel is permitted from ½ hour before sunrise to ½ hour after sunset 7 days per week.
Trucks can travel 24/7 if the vehicle is less than 11’ wide, 100’ long and 14’4” wide.



The information contained in these pages is research information primarily for use by oversize and overweight trucking company drivers, dispatchers and pilot car companies. While every effort is put into maintaining the accuracy of this information you must absolutely verify this information with the Iowa State DOT Permits office before commencing movement.


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