On 2/6/09, at approximately 1:13 a.m., a metro Bus was traveling W/B on the Columbia St Ramp onto the S/B lanes of the Alaskan Wy Viaduct.

As the metro bus changed lanes on the Viaduct, a Black Mercedes collided with rear bumper of the bus and lost control.  A passenger sustained a head injury and was treated by Seattle Fire on scene.  The passenger was transported to Harborview Medical Center (HMC). 

A Drug Recognition Officer , responded to HMC to screen the driver for signs of impairment and/or intoxication.  There were signs of impairment observed during the evaluations.  

The Investigation continues.