A vision-only Tesla Model Y robotaxi with Full Self-Driving (FSD) Unsupervised was spotted to be able to avoid collisions in the real world after dodging a Waymo robotaxi, which suddenly crossed the yellow line on an Austin roadway.
The passengers on the Tesla robotaxi claimed that the Waymo car had gotten out of the road at a steeper angle than expected and briefly crossed the middle yellow line. The sudden move put it squarely in the predicted path of the Tesla and left it in a potentially dangerous situation.
Compared to the Waymo robotaxi, which uses a combination of radar, lidar, and cameras, Tesla has a system that has a vision-only configuration and is powered by neural networks, trained on large volumes of real-world driving data. Although the Tesla Model Y does not have lidar or radar sensors, it recognized the abnormal path of the Waymo vehicle way in advance.
The FSD Unsupervised system was able to evaluate the unfolding scenario and implement an accurate Collision Avoidance Assist maneuver within minutes. The car reacted to the maneuver and slowed down without losing control, preventing what could have been a side-impact crash. The Tesla passengers said that the reaction was immediate but smooth. The maneuver felt natural, which had strengthened the belief in the ability of the system to make decisions.
A Surprising Moment for Passengers
The victim, narrating the event, reported that he and his girlfriend were taken by surprise by the sudden movement of the Waymo car. In a moment, the scenario seemed dangerous as the two autonomous vehicles were heading towards the road. But the fast response of the Tesla robotaxi saved it. “We were very surprised at the moment,” he said, “but we felt safer thanks to the quick response related to the safety of the robotaxi.”
The calm yet correct decision by Tesla’s system prevented a potentially serious incident without requiring human intervention.
Tesla's robotaxi saved me on Austin Road.
Waymo's vehicle entered the road at a steeper angle than expected, but Tesla's unsupervised Robotaxi detected it early and performed a Collision Avoidance Assist.
My girlfriend and I were very surprised at the moment, but we felt safer… pic.twitter.com/MtEYp0b6ZI
— Tsla Chan (@Tslachan) February 9, 2026
Cameras vs. Lidar
The incident also revives the discussion about the current debate between the vision-only philosophy of Tesla and the companies that implement several types of sensors. Elon Musk has long believed that a camera-based system, which relies on advanced AI, can be both safer than those that use lidar while maintaining scalability and cost efficiency.
Whereas Waymo has been spending a lot of money on lidar and radar to offer redundancy and high-precision depth mapping. The case in Austin is a real-life illustration of two technologies meeting in the middle of public roads, and the importance of making decisions within seconds.
Although it is not clear why the Waymo car went over the yellow line, the fact that the Tesla robotaxi car can predict and act is an indication of the significance of predictive modeling in autonomous driving.
