A Kirkland driver who allegedly drifted across several lanes of traffic on Evergreen Way last October and struck a bicyclist is facing vehicular homicide charges.

A police investigation found that the 56-year-old Kirkland man was also involved in a previous collision in 2010 in which he told Renton Police he had a sleeping disorder and had to take medication to stay awake.

He told police that due to his medical condition, his doctor had advised him he should not be driving because he is subject to losing consciousness, according to the police report.

Based on that information, the Snohomish County Sheriff’s Office recommended vehicular homicide charges on Tuesday and referred the case to the Snohomish County Prosecutor’s Office.

The Everett Police Department received a 911 call at approximately 7:15 p.m. on Oct. 17, 2012 reporting that a pickup truck struck a bicyclist in the 10600 block of Evergreen Way. The bicyclist, identified as 30-year-old Trenton M. Graham of Everett, died.

Detectives said the driver was traveling southbound on Evergreen Way when his vehicle drifted across the center turn channel and three lanes of northbound Evergreen Way. His truck struck the curb, the bicyclist and a power pole.

The driver told police he believed he lost control by “overcorrecting” after he drifted to the right, according to police documents. However, video surveillance of the collision showed his vehicle drift for no apparent reason and “no obvious effort to correct or change direction occurs,” the report continues.

His Department of Licensing driving record showed one previous moving collision. The police report for that accident indicated that he was traveling westbound on Sunset Boulevard in Renton on March 18, 2010 when he left the roadway, drove over a city sidewalk, struck and sheared a light pole. His vehicle continued onto private property where he damaged landscaping and a chain link fence, according to the police report.

The report continues that the driver claimed he lost consciousness and regained consciousness following the collision due to his sleeping disorder.

The driver of the pickup will not be identified until charges, if any, are made.