ST. PAUL — The Minnesota State Patrol is urging drivers to use caution, after eight troopers have been struck by vehicles on state roads in the past three days.

The State Patrol also says 31 troopers have been hit since November. That’s up from 13 troopers struck by vehicles at this time last year.

The State Patrol held a news conference Wednesday to address safety issues and highlight the state’s “Move Over” law — which requires drivers to move to a far lane if they see an emergency vehicle with flashing lights on the side of the road.

This week also marks the 33rd anniversary of the death of Trooper Roger Williams, who was killed by an out-of-control vehicle on Interstate 94 near Alexandria. He was a 26-year State Patrol veteran.