A traffic collision \resulted in a fatality at the corner of Farmers Lane and Montgomery Drive in Santa Rosa, late Monday, March 17, 2025. Both vehicles involved came to rest on the lawn of St, Eugenes Cathedral. (Kent Porter / The Press Democrat)

A woman suspected of driving under the influence and two passengers are dead following a crash on Highway 12 in San Joaquin County Sunday afternoon, the California Highway Patrol said.

The good Samaritan was standing near the right side of the GMC while attempting to assist the right front passenger and was struck by the Honda. The good Samaritan sustained fatal injuries and was pronounced dead, CHP said. The GMC and Honda became disabled, blocking the southbound lanes of Highway 99, north of Westside Boulevard.