Peggy Frank Memorial Act

This bill requires the U.S. Postal Service (USPS) to install climate control units in all existing delivery vehicles within three years of enactment and mandates that all new delivery vehicles purchased or leased after enactment must include them. It directly affects USPS operations by changing vehicle specifications for temperature regulation during deliveries. The bill also requires the Postmaster General to submit annual progress reports to Congress until the modifications are complete. The policy change aims to improve vehicle conditions for postal workers and package safety, without specifying environmental or cost impacts.