A Shawnee man was killed in a traffic accident in Norman on Wednesday.

The Norman Police Department responded to a report of a single vehicle, critical injury collision in the 7500 block of E. State Highway 9 at 11:55 a.m. Wednesday.

The preliminary investigation into the collision indicates that a Dodge Ram was traveling westbound on State Highway 9 when it departed the roadway, went down a steep embankment,and struck several trees.

The driver of the Dodge Ram has been identified as 85-year-old Donald Lang of Shawnee. Lang was transported by EMSSTAT to a local hospital, where he later succumbed to his injuries, according to information released by Norman police.

Portions of State Highway 9 between 72nd Avenue SE and 84th Avenue SE were closed for approximately three hours while the scene was investigated.

The collision remains under investigation by the NPD/OUPD Collision Investigation Team (CIRT).