A multi-vehicle crash on Highway 50 in Sacramento involved a semi-truck and several passenger vehicles in a chain-reaction collision on Monday morning, September 28, 2026.
The crash occurred at approximately 8:39 a.m. along westbound U.S. Highway 50 near the Stockton Boulevard off-ramp, according to information from the California Highway Patrol.
Initial reports indicated that a gray Toyota Highlander had been struck from behind by a semi-truck.
CHP later updated the incident information to describe a multi-vehicle crash involving the commercial truck and three other vehicles.
Among the vehicles identified at the scene were a green Ford Mustang Mach-E and a white Mercedes-Benz GLC 300.
The sequence of impacts had not yet been fully established.
The damaged vehicles came to a stop in the westbound lanes, creating a traffic obstruction during the Monday morning commute.
Emergency medical personnel were requested to respond and evaluate those involved in the collision.
Information regarding the number of people injured and the severity of their injuries was not immediately available.
Motorists traveling through the area experienced disruptions while emergency responders and CHP officers worked at the scene.
CHP is investigating what led to the chain-reaction crash and the order in which the vehicles collided.
Determining responsibility in a multi-vehicle accident may require investigators to examine vehicle damage, roadway evidence, driver statements, witness accounts, and any available video footage.
Authorities had not announced an official cause or determined liability.
Semi-trucks require significantly more distance to slow down and stop than smaller passenger vehicles because of their size and weight.
Heavy traffic and sudden changes in speed can increase the risk of rear-end and chain-reaction collisions.
Drivers should maintain adequate following distances, remain aware of changing traffic conditions, and avoid lingering in areas where a commercial truck driver may have limited visibility.
