The collision occurred around 2:10 a.m. on southbound Highway 101 near Shiloh Road off-ramp.

Sonoma County, CA. – One person was seriously injured in a single-car collision that happened early Monday morning in Windsor, the California Highway Patrol reported.
The collision occurred around 2:10 a.m. on southbound Highway 101 near Shiloh Road off-ramp.
A black Nissan Versa veered off the roadway and hit a tree for an unknown reason.
Sonoma County Sheriff's deputies and firefighters responded to the scene shortly after the crash.
One person suffered major injuries in the accident. The person was hospitalized in unknown condition.
Authorities are investigating to determine the cause of the crash.