Master Deputy Matthew Wilson was heading west on Route 140 near Mayberry Road around 3 p.m. ET when a pickup truck attempted to make a left turn in front of him.
Wilson was transported to Shock Trauma and the Westminster man who had been driving the truck and a passenger both refused medical treatment.
An investigation is ongoing at this hour, and anyone who may have witnessed the crash is asked to call Cpl. Webb at 410-386-2900.