Thor Michael Shay has admitted to a single count of driving without due care and attention in connection with the July 15, 2010 death of Don Cain.
Cain was controlling traffic at a construction site along the Lougheed Highway in Mission, 60 kilometres east of Vancouver, when he was hit by a passing vehicle.
The father of two died after being dragged by the vehicle.
A spokeswoman for the flagging association says some members of Cain's family believe the single criminal code driving infraction does not reflect the severity of the incident.
Diane Herback says her association is supporting Cain's family during the legal proceedings. (CKNW, News1130)