SR-22 is (FINANCIAL RESPONSIBILITY INSURANCE). It is the mechanism in Iowa to keep track of insurance on drivers that have had a problem with the Iowa Department of Transportation. It authorizes the Iowa Department of Transportation to suspend upon cancellation of insurance (SR-26) an individual's driving privledges.

You can satisfy your requirement by purchasing an insurance policy through a insurance agent licensed to file the Sr-22 (Certificate of Automobile Liability Insurance) in the state of Iowa.

Or, file a surety bond, cash or securitues equal to $55,000.