4 Va. Admin. Code § 25-40-1900
Vertical clearance above travelways shall be a minimum of seven feet or adequate warning shall be provided to indicate an impaired clearance.
§§ 45.1-161.3, 45.1-161.294 and 45.1-161.305 of the Code of Virginia.
Derived from VR480-05-1.2 § 11.10, eff. July 19, 1989.