Collin County, TX — January 8, 2026, three people were injured due to a car accident at approximately 9:30 p.m. along Farm to Market 544.

According to authorities, two people—a 16-year-old woman and a 46-year-old man—were traveling in a westbound GMC Terrain on F.M. 544 attempting a left turn at the Sanden Boulevard intersection when the accident took place.

The intersection is controlled by a traffic signal. Officials indicate that, for as yet unknown reasons, an eastbound Ford Mustang entered the intersection against a red light. A collision consequently occurred between the front-end of the Mustang and the right back quarter of the Terrain.

The 46-year-old man from the GMC reportedly sustained serious injuries over the course of the accident. The other two people involved suffered minor injuries, as well, according to reports.

Additional details pertaining to this incident—including the identities of the victims—are not available at this point in time. The investigation is currently ongoing.

Commentary by Attorney Michael Grossman

When a crash happens in a signal-controlled intersection, the first explanation often points to who had the light. But saying one vehicle entered against a red signal does not explain how the timing broke down or what happened in the seconds before impact.

Did the authorities thoroughly investigate the crash?
An intersection collision involving a left-turning vehicle requires careful reconstruction. Investigators should examine the speed and approach of both vehicles, the signal phase timing, and whether either driver attempted to brake or change direction before contact. Measuring impact angles, documenting vehicle positions, and analyzing how much time each driver had to react are all essential steps. Not every officer has advanced training in detailed crash reconstruction. The key question is whether enough expertise and time were devoted to fully understanding how the vehicles came together.

Has anyone looked into the possibility that a vehicle defect caused the crash?
Even when a red-light violation is suspected, mechanical failure must still be considered. Brake malfunctions, throttle problems, or steering issues can affect how a vehicle responds when approaching an intersection. Electronic system errors may also interfere with proper vehicle operation. A thorough mechanical inspection of both vehicles is necessary to rule out hidden defects that could have contributed to the collision.

Has all the electronic data relating to the crash been collected?
Electronic evidence can provide clarity about the moments before impact. Vehicle systems may record speed, throttle position, braking input, and system alerts. Phone records can help determine whether distraction played a role. Signal timing data and any nearby camera footage may also confirm how the sequence unfolded. If this information is not preserved early, it may be lost, leaving important questions unanswered.

When several people are injured and fault appears straightforward, surface explanations are not enough. Clear answers depend on whether investigators examined every available piece of reliable evidence and reconstructed the full sequence of events.

Key takeaways:

• A red-light allegation is not a complete explanation.
• Mechanical issues can affect braking and vehicle response.
• Electronic data can clarify what happened before impact.