San Joaquin County, CA — January 9, 2026, one person was killed and another person was injured in a car accident at about 4:30 a.m. on Interstate 5/West Side Freeway.

Authorities said a person was hit by a car while changing a tire near Roth Road on southbound I-5.

The person changing the tire, whose name has not been made public yet, was pronounced dead at the scene of the crash, according to authorities.

Another person was hospitalized with unspecified injuries, authorities said, it is not clear how that person was involved in the cash.

Authorities have not released any additional information about the San Joaquin County crash at this time.

Commentary by Attorney Michael Grossman

In the quiet early hours before dawn, tragedies like these remind us how suddenly routine tasks can turn catastrophic on the roadside. While responders often arrive quickly, the real work of understanding what happened, and why, only begins after the scene clears.

Did the authorities thoroughly investigate the crash? When an incident involves a pedestrian outside a vehicle on a major freeway, it’s crucial for investigators to do more than document the final positions. Did they reconstruct the path of both vehicles? Did they examine whether the approaching driver had time to see and react? Serious analysis often requires specialized tools like total station mapping or scene lasers, but not every agency uses them. The time of day, the position of the disabled vehicle and the actions of everyone involved should all factor into a comprehensive review. Without this deeper work, it’s easy to miss details that change the entire picture.

Has anyone looked into the possibility that a vehicle defect caused the crash? Whenever a vehicle ends up stopped in a high-speed lane, especially in the dark, it's fair to ask whether a mechanical failure played a part. Was the tire change routine, or was it triggered by something more sudden, like a blowout or axle problem? These are the kinds of issues that rarely show themselves unless someone takes the time to inspect the car carefully afterward. And for the striking vehicle, it's just as important to consider whether braking systems or onboard sensors failed to engage when they should have.

Has all the electronic data relating to the crash been collected? Most modern vehicles store a wealth of data: speed, brake pressure, steering angles, even collision alerts. That kind of information could shed light on whether the driver was distracted, slowed down or took evasive action at all. If someone else was injured, it’s also worth checking if they were inside one of the vehicles; and if so, how their behavior before impact might show up in phone or GPS records. These aren’t always easy questions, but the data exists if someone knows to ask for it.

When accidents like this happen, it's not enough to look at where the cars ended up. It's about asking what led to those final moments and whether more could have been done to prevent them. That clarity doesn’t come automatically; it takes work, time and the right questions.

Key Takeaways:

• Investigators need to reconstruct not just the crash, but the events leading up to it.
• Both vehicles should be inspected for hidden mechanical issues.
• Electronic data from all involved vehicles could be key to understanding what happened.