From 4 p.m. yesterday through 4 a.m. today, Virginia State Police troopers and dispatchers have fielded 2,231 calls for service statewide. During the 12-hour period, troopers responded to 825 traffic crashes and 620 disabled vehicles. The majority of the crashes involved damaged vehicles only. Due to vehicles losing control on slick roadways, two state troopers have been struck and injured. The department advises drivers to stay off the highways because roads are slick and hazardous. Police encourage you to delay travel until later today so VDOT crews can treat and clear the highways. If you do have to travel police want to remind you to drive to save lives. Police ask that you clear off all snow from you vehicle, add extra time to reach your travel destination, reduce your speed, increase driving distance, buckle up, and move over for all stopped emergency vehicles.