In Revision 1 to the Virginia Work Area Protection Manual, issued in April 2015, the design of the sign was changed from "WORK VEHICLE DO NOT FOLLOW" to "WORK VEHICLE FREQUENT TURNS" (G20-V1a). In Revision 1, VDOT requires that the WVDNF signs be replaced with "WORK VEHICLE FREQUENT TURNS" by July 1, 2017.
Note also that the "WORK VEHICLE FREQUENT TURNS" sign may be displayed at all times.