Va. Code Ann. § 46.2-808
A. The Commonwealth Transportation Board may, when necessary to promote safety, prohibit the use of controlled access highways or any part thereof by any or all of the following:
C. This section shall not apply to any vehicle or equipment owned or controlled by the Virginia Department of Transportation, while actually engaged in the construction, reconstruction, or maintenance of highways or to any vehicle or equipment for which a permit has been obtained for operation on such highway.
Any person violating a restriction or prohibition imposed pursuant to this section shall be guilty of a traffic infraction.
1964, c. 239, § 46.1-171.1; 1966, c. 365; 1981, c. 585; 1983, c. 262; 1989, c. 727; 1991, c. 55; 2004, cc. 947, 973; 2006, cc. 529, 538; 2007, cc. 209, 366.