Iowa Code Title XIII. Commerce [Chs. 505-554D] § 515D.8. Duplicate coverage

If an insured obtains a second policy which provides equal or more extensive coverage for any vehicle designated in both policies, the first policy's coverage of such vehicle may be terminated by failure to renew as of the effective time and date of the second policy, whether or not the first policy insurer complies with all provisions of section 515D.7.