Loudoun County drivers are asked to delay commutes or to telework this morning, according to the Virginia Department of Transportation (VDOT).
Drivers who must head out are asked to use extreme caution, as low ground temperatures overnight mean that even treated roads have refrozen.
Slow down, allow extra time to destinations and take extra care on areas prone to freezing such as bridges, ramps and secondary roads.
VDOT reports that about 500 trucks worked through the night to clear extremely treacherous conditions. Crews will remain on duty through the morning rush hour to continually treat slick roads.
Here are several resources to help with your commute:
• Check www.511virginia.org for road conditions
• Follow @VaDOTNOVA on Twitter
• Get more details on snow removal (PDF) in Northern Virginia