Open to public travel
Open to public travel means except during scheduled periods, extreme weather conditions, or emergencies, open to the general public for use with a standard passenger auto, without restrictive gates or prohibitive signs or regulations, other than for general traffic control or restrictions based on size, weight, or class of registration.
23 CFR § 660.103
In addition to the definitions in 23 U.S.C. 101, the following apply to this subpart: