Do You Need an Iowa Trucking Permit?

DOT Office

800 Lincoln Way
Ames, IA 50010

Permit Office

Monday - Friday
8:00 AM - 4:30 PM Central Time



External Website

  • Copy of the CAB Card required when obtaining an overweight permit

Permit Validity

5 Consecutive Days

Transportation Restrictions

Travel restricted during the following holidays: Memorial Day, Independence Day, and Labor Day. No movement will be allowed on these holidays or after noon on days preceding these holidays and holiday weekends which include holidays that fall on Monday.

Operating Time

Half an hour before sunrise to half an hour after sunset.

Weekend Travel

Travel allowed on Saturday and Sunday.

Night Moves

Night travel may be permitted if under 100′ Long, 11′ Wide, or 14’4″ High.

Transportation Requirements

Provision Regulations


Anything over routine issue dimensions requires special review from the DOT.

Oversize Load Signs

“Oversize Load” signs required if over 75’ long, 8’6” wide, or 14’4” high.


A revolving amber light is required when length exceeds 85’ or front overhang exceeds 25’ or rear overhand exceeds 10’ or weight exceeds 80,000 lbs. An escort can be used in lieu of an amber light

18” red flags are required on the extremities of any overwidth load, for any load over 75’ long, or 14’4” high, and for any rear projection that exceeds 4’.

Routine Issues

Component Restriction
Single Axle 20,000 lbs.
Tandem Group 40,000 lbs.
Tridem Group 60,000 lbs.
Quad Group 80,000 lbs.
Gross Weight 100,000 lbs.
Width 14'
Height Must Clear Heights on Route
Length 120'

Escort Requirements

Dimension Requirement
When Width exceeds Half the Road up to 14'6" 1 Front on 2-Lanes*
Width Over 14'6" 1 Front on 2-Lanes
Width up to 16'6" If over Half the Road 1 Rear on 4-Lanes
Width Over 16'6" 1 Rear on 4-Lanes
Height Over 14'4" 1 Front with High Pole
Length Over 120' 1 Rear

*When road width is 12’ or more with sufficient shoulders, of 6’ in width, amber lights on the front and rear of the vehicle and load may be used in place of the front escort.

We are committed to providing expert-level guidance to truckers, transport agencies, and those seeking to secure their permits. It is our mission to keep you both safe and legal as you haul your loads. We pride ourselves on being fast and affordable. Let us support your fleet and learn what it means to work with America's most liked permit agency.

Donald Beeman, President Donald Beeman, President

Coast 2 Coast Trucking Permits

5410 Homberg Drive, Suite 33 Knoxville, TN 37919

Call (888) 963-0830

Fax (865) 963-0831

Email [email protected]

Hours of Operation

Monday - Friday
7:00 AM - 5:30 PM EST