Dennis Campbell, 50, entered the plea Monday. He’s charged in the September 2013 death of Eugene W. Olson.

Police say Campbell’s vehicle hit Olson’s scooter from behind on a Salina street. The Salina Journal reports (http://bit.ly/WSjDwi ) scooters are permitted on the section of the street where the accident occurred because there are no sidewalks.

Olson is scheduled to go on trial Jan. 13.

His relatives previously settled a civil lawsuit against Campbell.