You may contact the Iowa DOT by phone or fax:

Iowa Department of Transportation
Research and Technology Bureau
800 Lincoln Way
Ames, IA 50010
Telephone: 515-239-1646
Fax: 515-239-1766

or by email:

Willy Sorenson - ITS Engineer
515-239-1212
willy.sorenson@dot.state.ia.us

Variable Message Signs

These signs are used to convey different messages to travelers. These include information related to crashes, traffic delays, detours, alternative routes and special events. These devices are typically connected to a power source and phone line; some newer models are solar powered making it possible to place them virtually anywhere. The message and control systems are usually wireless.