Emergency crews respond to a serious crash involving a pedestrian on Route 120 west of Fisher Road near Wauconda late Saturday evening. | Photo by Wauconda Fire District.

Police say a man exited his car and walked into traffic on Route 120 near Wauconda before being struck by a vehicle and critically injured late Saturday evening.

The Wauconda Fire District and Lake County Sheriff’s Office responded around 11:45 p.m. Saturday to Route 120 west of Fisher Road in unincorporated Wauconda for a report of a vehicle crash.

Sheriff’s deputies arrived and located a pedestrian, identified as a 34-year-old Grayslake man, with life-threatening injuries, according to Lake County Sheriff Spokesman Lt. Christopher Covelli.

A preliminary investigation shows the pedestrian exited a vehicle on Route 120 minutes before the crash and began walking.

The pedestrian was walking along the shoulder when he entered the westbound lanes of Route 120.

A westbound Chevrolet Impala, driven by a 30-year-old Round Lake man, struck the pedestrian

Covelli said the victim was initially transported by ambulance to Advocate Good Shepherd Hospital in unincorporated Barrington.

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Due to the severity of his injuries, he was then transferred by medical helicopter to Advocate Lutheran General Hospital in Park Ridge.

The victim currently remains at Advocate Lutheran General Hospital in critical condition.

Sheriff’s crash investigators are working to determine if impairment was a factor in the crash and why the pedestrian exited a vehicle on a busy roadway, Covelli said.

The crash remains under investigation by the Lake County Sheriff’s Office Technical Crash Investigations Unit.