This legislation amends title 49, United States Code, to enhance safety for fixed route bus operators by introducing new requirements for operator workstations. It mandates that certain new fixed route buses purchased with federal funds must be equipped with a protective barrier for the operator. Specifically, starting two years after enactment, any new fixed route bus 30 feet or longer with a useful life of 10 or more years, purchased with federal funds (excluding section 5311 funds), must have a barrier. This barrier must extend from the bus floor to the ceiling and be capable of fully enclosing the workstation to prevent the unwanted entry of persons, fluids, and objects. Crucially, the barrier must not impede the operator's lines of sight, and this requirement can be waived if a relevant labor organization agrees.