PARK CITY, Kan. — Authorities say a Kansas Highway Patrol motorist assist driver has died after his vehicle was struck by a semi-trailer truck near Park City.

The Wichita Eagle reports the collision occurred late Wednesday afternoon. The motorist assist truck was in the median when the driver pulled into the inside lane of southbound I-135. The truck was hit from behind by a semi-trailer truck.

Authorities say the Highway Patrol motorist assist driver was critically hurt, and later died at a hospital. His name is being withheld pending notification of relatives. The semi driver wasn’t injured.

Trooper Chad Crittenden says the collision occurred south of a hill and it’s possible the victim either didn’t see the semi or misjudged its speed.

Information from: The Wichita (Kan.) Eagle,