In theory there is separate oversight over public transit in the United States as well. In California the CPUC regulates, for example, Muni and BART while the

In theory there is separate oversight over public transit in the United States as well. In California the CPUC regulates, for example, Muni and BART while the CHP has oversight over agencies that use state and federal highways (the subset of the Muni fleet that runs down Van Ness and 19th Ave is under the purview of the CHP). In practice the regulators are feckless.