Modifies provisions relating to ignition interlock device requirements for certain intoxication-related traffic offenses

HB 1804 modifies Missouri's traffic laws for drivers convicted of intoxication-related offenses by creating an alternative to license suspension. It allows individuals facing suspension under specific provisions to avoid it by installing a certified ignition interlock device (IID) in their vehicle, instead requiring a 90-day restricted driving period. If the IID is maintained properly (with no alcohol readings above set limits or tampering), the driver can regain full driving privileges after 90 days. The bill directly affects drivers convicted of certain DUI offenses who would otherwise face suspension under sections 302.302(8) or (10). It replaces prior penalty structures with this IID-based pathway, emphasizing device compliance as the key requirement for reinstatement.