Tesla FSD v14.3.7 almost crashed into a train. This is at least the third such incident in 2026.
Tesla with the latest version of Full Self-Driving, v14.3.7, failed to stop before an active railroad crossing and attempted to drive onto the tracks just before a train was approaching. The incident occurred on August 26, 2026, with the driver applying manual brakes at a speed of about 9 mph, or less than 15 km/h.
This is no longer an isolated mistake. By 2026, at least the third case has been reported in which FSD behaved near tracks as if it were eager to confirm whether a train was indeed coming.
The video was posted on X by Lei Xing, a automotive journalist and co-host of the podcast China EVs & More. He wrote outright, “I would have been run over by the train if I hadn’t braked,” adding that the crossing lights were flashing and the train’s sound signals were “pretty loud.”
The video shows the “Self-Driving” indicator active. The car approaches an intersection, slows down, but does not stop despite flashing lights, an audible train, and a clearly visible threat. It is only when the driver presses the brake that the Tesla drives onto the tracks.
An important detail: Xing confirmed that the car was running FSD 14.3.7, which is the latest version available for vehicles with the AI4 platform. This is all the more frustrating since earlier notes for version 14.3 promised better handling of “rare and unusual objects extending, hanging, or leaning into the vehicle path.” An abandoned barrier or a train is hard to consider a rare object.
The problem has persisted for months
In March 2026, a Tesla in FSD mode in West Covina, California, drove through an abandoned gate and didn’t start braking until after hitting something. A month later, a owner from Texas shared a video showing the car driving through a barrier seconds before hitting a train. He had to floor it to get off the tracks, with the gate’s arm hitting the windshield.
That’s not all. In 2025, in Pennsylvania, a Tesla in “self-driving mode” was actually hit by a train after turning onto the tracks. NBC News has gathered over 40 reports of Tesla issues at railroad crossings. For a system advertised as Full Self-Driving, this is a deeply concerning list.
NHTSA Is Already Investigating Teslas
The U.S. NHTSA launched an investigation in October 2025 following 58 reported accidents in which the system allegedly ran red lights or drove into oncoming traffic. The investigation has since been expanded to cover about 2.9 million vehicles equipped with FSD. This is just a step away from formally ordering a recall.
Separately, senators Ed Markey and Richard Blumenthal pressed the agency to examine specific cases involving train crossings, calling them a “disturbing safety risk.” It’s hard to blame them.
Tesla still sells this package as “Full Self-Driving,” although its instructions state that the driver must remain vigilant and ready to take control immediately. Marketing is one thing, responsibility is another.
With such recordings, it becomes increasingly difficult to take seriously claims of unmonitored autonomous driving “this year.” How do you assess FSD when the system can’t even handle flashing lights, traffic signs, and trains?
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