Modifies provisions relating to school bus endorsements

HB 438 modifies Missouri's rules for school bus driver licenses by establishing age-based terms and requirements. Drivers aged 21-70 receive 6-year licenses for school bus endorsements, while those under 21 or over 69 get 3-year licenses. Drivers aged 76 or older with school bus endorsements must renew annually and pass a test excluding pre-trip inspections. The bill also requires verifying legal residency status for license issuance and sets specific fees based on license duration and age.