Steven Sun, 54, Killed in Dublin Boulevard Head-on Crash Near Silvergate Drive

Steven Bai Ang Sun, 54, of Dublin, died after a Rivian SUV and the Hyundai Sonata he was driving collided head-on on Dublin Boulevard west of Silvergate Drive at about 8:37 a.m. on Tuesday, October 20, 2026. Both vehicles overturned after leaving the road. The other driver was treated at a hospital and released.

Two Vehicles Left the Road and Overturned

Dublin Police Services said a Rivian SUV and an eastbound Hyundai Sonata collided head-on on Dublin Boulevard west of Silvergate Drive at about 8:37 a.m. on Tuesday, October 20, 2026. The impact sent both vehicles off the roadway, where they overturned and came to rest near the north shoulder of westbound Interstate 580.

Police responded after the California Highway Patrol alerted officers to the collision. Both drivers were taken to a hospital. The Alameda County Coroner's Bureau identified the Hyundai driver as Steven Bai Ang Sun, 54, of Dublin. Police said he died at about 2:02 p.m. The Rivian driver was treated and released. No passengers were in either vehicle.

Investigation Remains Open

Police said drugs and alcohol did not appear to be factors. Investigators had not released a cause or assigned fault. Dublin Boulevard was closed in both directions near Silvergate Drive while crews worked at the scene and reopened later that day.

Anyone with information can contact Dublin Police Services. Investigators may review vehicle data, roadway evidence, witness statements and nearby camera footage to determine how the vehicles came into conflict.

What Families Should Know

A head-on collision can involve questions about lane position, speed, visibility, mechanical condition and road design. A preliminary description does not answer those questions. The vehicles and their electronic data should be preserved until investigators and the families have had a fair opportunity to inspect them.

California families can request the collision report, medical and coroner records, and available insurance information. If evidence later points to a public roadway issue, a written government claim can have a much shorter deadline than an ordinary wrongful death lawsuit.

This article does not make any finding of cause or fault. The investigation remains open.

Our thoughts are with Mr. Sun's family and friends.

8:37 a.m.

Approximate time of the head-on collision on October 20.

Dublin Police information reported by Pleasanton Weekly

2 vehicles

Both vehicles left the roadway and overturned after the collision.

City of Dublin alert and Pleasanton Weekly reporting

Source Note

This article is based on Dublin Police Services and Alameda County Coroner's Bureau information reported by Pleasanton Weekly, a City of Dublin traffic alert and KRON4 coverage in October 2026.

Preliminary Information

Police had not released a cause or assigned fault. Drugs and alcohol did not appear to be factors, and the investigation remained open.

Frequently Asked Questions

Where did the fatal Dublin crash happen?

On Dublin Boulevard west of Silvergate Drive, at about 8:37 a.m. on October 20, 2026.

Who was killed?

The Alameda County Coroner's Bureau identified the Hyundai driver as Steven Bai Ang Sun, 54, of Dublin.

What happened to the other driver?

Police said the other driver was treated at a hospital and released.

Have police said what caused the crash?

No. Police said drugs and alcohol did not appear to be factors, but the cause remained under investigation.

Steven Sun, 54, Killed in Dublin Boulevard Head-on Crash Near Silvergate Drive