08/08/2011PDFMapState highwaysInterstate highwaysMapsVisual presentationsTruckingVehiclesTruck trafficHighway trafficTraffic volumeHighway transportationHighwaysInterchanges and intersectionsCitiesCountiesTiresThree axle trucksTrucks by number of axlesIowaIowa. Dept. of TransportationIowa. Dept. of Transportation. Office of Transportation DataNTL-FREIGHT-Trucking IndustryNTL-HIGHWAY/ROAD TRANSPORTATION-HIGHWAY/ROAD TRANSPORTATIONNTL-OPERATIONS AND TRAFFIC CONTROLS-Traffic FlowNTL-REFERENCES AND DIRECTORIES-REFERENCES AND DIRECTORIESUS Transportation CollectionTruck volumes represented on this map are Annual Average Daily Traffic Volumes between major traffic generators: i.e., Highway Junctions and Cities.Truck volumes include 6-Tire and 3 A...