Iowa Highways
- Contains route listings, information about county roads, scenic and historic routes, and photographs.
- http://iowahighways.home.mchsi.com/

Iowa Association of Railroad Passengers
- Nonprofit citizens organization advocating railroad transportation. Includes FAQs, membership application, newsletters and events. Located in Cedar Rapids.
- http://faculty.simpson.edu/iarp/www/

Windstar Lines
- Provides charter bus service throughout the state. Includes company history, staff directory, and information about equipment, drivers and maintenance program. Headquartered in Carroll, with terminals in Des Moines and Iowa City.
- http://www.gowindstar.com/

Express Limousine Service Iowa
- Offers share-ride van service and exclusive Town Car service for the Iowa City, Cedar Rapids and Quad Cities Airports. Includes fleet photographs and company profile. Located in North Liberty.
- http://www.limosbyexpress.com/

Carver Aero, Inc.
- Information about aircraft charter and maintenance services, and flight training. Locations in Davenport and Muscatine.
- http://www.carveraero.com/

Iowa Public Airports Association
- Dedicated to provide information to and represent the interests of all of the publicly owned airports in the state. Includes information about meetings, bylaws, membership, legislative issues, events and newsletters. Located in Urbandale.
- http://www.iowaairports.org/

IAPG Iowa Aviation Promotion Group
- Nonprofit corporation dedicated to growth, education, and development of aviation within the state. Includes profile, information about programs, calendar of events, list of officers and board of directors, and resource links.
- http://www.flyiowa.org/

Iowa Northern Railway Company
- Home of the Hawkeye Express with offices in Greene, Waterloo and Cedar Rapids. Includes information about the Manly Terminal, company store and service map.
- http://www.iowanorthern.com/

Iowa Interstate Railroad
- Headquartered in Cedar Rapids and operates over 500 miles between Omaha, Nebraska and Chicago, Illinois. Contains tariff rates, route maps, photographs and list of customers by commodity group.
- http://www.iaisrr.com/

Iowa Department of Transportation
- DOT news releases, motor vehicle information, road conditions, and traveling reports.
- http://www.dot.state.ia.us/