Iowa Department of Transportation
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Registered Motor Vehicles

  • The total number of vehicles registered in Iowa (autos, buses, trucks, trailers, etc.) equaled 4,135,870 in 2008.
  • There were 936,006 trucks and truck-tractors registered in Iowa in 2008. Among the trucks registered in Iowa, 916,271 are motor trucks and 19,735 are truck-tractors.
  • There were 752,769 registered multi-purpose vehicles. (2008)
  • Motorists purchased approximately 55 million gallons of gasoline and 1.077 billion gallons of gasohol in Iowa in 2004.
  • In 2007, the Iowa DOT's Motor Vehicle Enforcement officers conducted 59,514 truck and tractor-trailer safety inspections.
  • There are 15 weigh scale facilities in Iowa: 12 on the Interstate Highway System and three on the Primary Road System. Four of the interstate scales have PrePass technology. Click here for a link to the scale locations.