A bill for an act relating to motor vehicles, including window tint and the issuance and display of one registration plate, and making penalties applicable.

This Iowa bill (HSB 574) simplifies vehicle registration plate requirements. It allows school buses, transit buses, and certain older vehicles (1948 model year or older) to display only one plate instead of two, with the second plate kept in the vehicle. The bill also introduces annual validation stickers to replace new plates for most vehicles during renewal, reducing paperwork. Additionally, it permits replica/street rod vehicle owners to display period-appropriate plates alongside current registration. These changes primarily affect vehicle owners, transit operators, and school bus services by streamlining registration administration.