45 C.F.R. § 3.27 Bicycles.
Title 45 - Public Welfare
A person may not operate a bicycle, motorbike, or similar vehicle without a horn or other warning device, and, if the vehicle is operated between dusk and dawn, it must be equipped with an operating headlight, and taillight or reflector.
Title 45: Public Welfare
PART 3—CONDUCT OF PERSONS AND TRAFFIC ON THE NATIONAL INSTITUTES OF HEALTH FEDERAL ENCLAVE
Subpart B—Traffic Regulations
§ 3.27 Bicycles.
