Virginia State Police had responded to nearly 500 vehicular accidents by Sunday evening as a winter storm continued to pound the state. With a winter storm advisory in effect until Monday morning, troopers raced to work 482 traffic accidents and 486 disabled vehicles, officials said. Numerous multi-vehicle backups were reported after trailers jackknifed along stretches of the interstate due to icy conditions. However, “the majority of those crashes have involved only damage to vehicles,” one explained. “There have been no reported traffic fatalities during this time period.” Troopers urged drivers to avoid traveling overnight.