I've got the following from VDOT which I'm putting up:

The main, more heavily traveled roads in a subdivision will be plowed first, to be followed by low- volume roads and cul-de-sacs.
Plows will make one or two trips to provide a path through neighborhood streets, but they will not clear to bare pavement or from curb to curb. Because chemicals are not used in subdivisions, roads will remain snow packed and rutted after the plow has passed. Crews will put sand on hills, curves, and intersections as needed to provide traction. 

If planning to shovel their driveways, residents should refrain from clearing the last few feet at the curb until your street is plowed, as plows may push snow back into driveways. It also helps to shovel to the right as you face the road. VDOT does not remove snow from sidewalks or trails.

VDOT plow drivers have assigned routes that include each and every state-maintained road in Northern Virginia. Call 911 if you have a medical emergency and need to leave your home. If by Wednesday, residents have not seen a plow in their subdivision, they can call 703-383-VDOT or e- mail novainfo@vdot.virginia.gov with the location.

(I"m back in Richmond.  Trying to find all my staff.  Call us at 703-349-3361 or 804-698-7534 if you need help)