Santa Rosa Motorcyclist Died After August Collision
A 66-year-old woman succumbed to injuries following a crash between her motorcycle and an SUV.
Updated on Sept. 18, 2026 in Motocycles

Dawna Dianne Heller died on September 12 after being involved in a motorcycle collision in late August. The incident occurred when an SUV driver turned into the path of her motorcycle.
Why it matters
The fatality highlights the risks inherent in intersections where left-turning vehicles cross the path of oncoming two-wheeled traffic. Authorities have confirmed the SUV driver involved was not impaired during the collision.
The crash involved a 2003 Harley-Davidson motorcycle and a 2020 Acura SUV at 10 a.m. The intersection at Third and Morgan streets was closed for two hours following the accident.
The players
Dawna Dianne Heller
She was a 66-year-old motorcyclist who died following a vehicle collision in Santa Rosa.
The details
The collision occurred when the driver of a 2020 Acura SUV turned left directly into the path of 66-year-old Dawna Dianne Heller on her 2003 Harley-Davidson. First responders arrived at the scene near Third and Morgan streets to provide life-saving measures before transporting the victim to a hospital.
Timeline
The crash occurred near Third and Morgan streets on August 30 at 10 a.m.
Dawna Dianne Heller died from her injuries on September 12.
The police department identified the victim on September 18.
Roadmap
Motorcycle-involved intersection collisions continue to be a significant safety challenge for the broader automotive and transportation sectors. This event underscores the persistent vulnerability of riders compared to occupants in modern SUVs equipped with advanced safety systems.
Drivers in Santa Rosa should exercise heightened caution when executing left turns at intersections like Third and Morgan streets. Motorcyclists should remain aware that turning vehicles remain a primary hazard even when visibility appears clear.
The takeaway
Intersection safety requires constant vigilance from both riders and those operating larger vehicles. Riders should maintain a defensive posture when approaching intersections to account for potential turning traffic.
Further reading
For more information on road safety standards, visit Motocycles.
Source note: This article includes information reported by Santa Rosa Press Democrat.










