The retired system, in use since the 1980s, included a World War II-era Howitzer, an M60 tank and a recoilless rifle.

SNOQUALMIE PASS, Wash. - The Washington Department of Transportation (WSDOT) announced new technology implemented at Snoqualmie Pass on I-90 to improve controlled avalanches, safety and road delays.

This story was originally published on MyNorthwest.com. The Washington State Department of Transportation (WSDOT) ratchets up its workload along sections of US 2 near Stevens Pass Summit this week.

According to WSDOT, a pilot car will lead traffic 24 hours a day between Upper Tronson Creek Road and Ingalls Creek Road.