A Tesla Semi, an all-electric heavy-duty truck, caught fire on the southbound lanes of Interstate 880 in Hayward, California, on the evening of Tuesday, October 27, 2026. The incident occurred near Route 92 and resulted in a complete shutdown of both northbound and southbound lanes for approximately 10 hours. Authorities cited the potential risk of hazardous chemical smoke from the lithium-ion battery as the reason for the prolonged closure. The driver was able to exit the vehicle unharmed, and no other vehicles were involved in the incident.
This image illustrates the specific incident in Hayward where a Tesla Semi caught fire while in traffic.
This event is notable because it occurred without a collision. In a previous incident in August 2024, a Tesla-operated Semi caught fire on I-80 after leaving the road and striking a delineator post and a tree. In that case, the National Transportation Safety Board (NTSB) determined the impact ignited the battery. Because the Hayward fire occurred while the truck was in traffic without a crash, the investigation is expected to focus on internal components, such as the battery pack, high-voltage systems, or drive units. It remains unclear whether the fire originated in these core components or spread from an external source like a tire or brake fire.
The incident highlights ongoing challenges regarding the management of large-scale electric vehicle (EV) fires. While truck fires are common—with the National Fire Protection Association (NFPA) reporting an average of over 15,000 large-truck fires annually, mostly involving diesel engines—the specific behavior of lithium-ion batteries in Class 8 trucks presents unique difficulties for first responders. Firefighters initially estimated the battery could burn for up to 18 hours, a duration that necessitates significant infrastructure and safety planning for freeway management. As Tesla moves toward volume production of the Semi, these incidents serve as critical data points for both the manufacturer's safety protocols and the development of emergency response strategies for heavy-duty electric transport.