San Antonio, TX — December 3, 2025, one person was killed in a truck accident at about 12:20 a.m. in the 1900 block of the access road for Southeast Interstate Loop 410.
Authorities said a car crossed several lanes of traffic and crashed into a parked semi-truck after losing control near Rigsby Avenue. It ended up wedged under the back of the trailer.
The driver, a man whose name has not been made public yet, was pronounced dead at the scene of the crash, according to authorities.
Authorities have not released any additional information about the Bexar County crash at this time. The accident is still under investigation.
Commentary by Attorney Michael Grossman
When someone hears that a car went under the back of a parked semi-truck, the natural reaction is to assume the driver of the car made a mistake. That may be true here, but before we jump to conclusions, it’s worth asking a few key questions that reports haven’t answered yet: Why was the truck parked there? Was it legally stopped? Was it visible enough for approaching drivers to see it in time?
Depending on whether the semi-truck was parked on the shoulder, an emergency lane or illegally on the access road itself, different legal questions come into play. I’ve worked on cases where 18-wheelers were improperly stopped in low-light areas or on narrow shoulders, and even when the driver of a passenger vehicle veered off the road, that didn’t automatically excuse the truck’s presence.
It’s also unclear how much lighting or reflective tape was on the back of the trailer. If a vehicle becomes wedged under a trailer, that often raises questions about whether the underride guard (a required safety feature) was damaged, missing or defective, and whether the trailer was properly lit or visible to oncoming traffic.
All of that can be confirmed or ruled out by looking at key pieces of evidence. The truck’s engine control module (black box) can show whether the vehicle had been stationary for some time or had just recently stopped. Dash cams, if installed, may show whether other vehicles were avoiding the parked truck. And cell phone data could reveal if either driver was distracted in the moments leading up to the crash.
I’ve seen situations where trucks were left in dangerous places because of unclear company policies or poor driver training. In those cases, responsibility didn’t just fall on the driver. It extended to the people who put that driver on the road without clear guidance or proper oversight.
At this point, we don’t know whether the trucker acted negligently or whether the crash was caused entirely by the driver who crossed multiple lanes. But we do know that a person died, and that demands a full, independent investigation; one that goes beyond surface-level assumptions and focuses on the facts.
Key Takeaways:
- It’s not clear whether the truck was legally or safely parked at the time of the crash.
- Evidence like ECM data, dash cams and trailer lighting conditions could clarify what happened.
- Underride collisions often raise questions about trailer visibility and underride guard compliance.
- Trucking company policies and driver oversight may factor into whether the truck was properly stopped.
- A complete investigation is necessary to determine who, if anyone, failed to meet their responsibilities.
