Tesla's Full Self-Driving system made a questionable call at an intersection this week, running what appeared to be a red light in a video shared by Electrek on July 16, 2026. The incident has reignited a familiar tension in the autonomous vehicle world: how much can owners trust FSD, and how closely do they actually need to watch the road?

The video shows a Tesla proceeding through an intersection where the traffic signal appears red, drawing immediate debate in the comments about whether the light was actually red at the moment the vehicle entered. This disagreement itself is telling. It reflects a pattern that comes up repeatedly with FSD incidents: the interpretation of what the system did, and whether it was wrong, often becomes contested ground rather than a clear-cut safety failure.

Why Does FSD's Aggressiveness Matter at Intersections?

Tesla's FSD offers drivers different behavioral profiles that significantly affect how the system handles traffic situations. The "Assertive" profile, colloquially known as "Mad Max" among Tesla owners, is the most aggressive option available. This mode follows other vehicles more closely, changes lanes more frequently, and makes tighter calls at intersections compared to the "Chill" or "Average" profiles. While the Assertive setting is not designed to ignore traffic signals, its aggressive behavior at intersections leaves less margin for error, particularly in ambiguous signal timing situations where lighting, sun glare, or unusual intersection geometry could affect the system's perception.

The red light incident highlights a critical distinction: FSD does not guarantee correct signal detection in all conditions. The system's performance depends heavily on environmental factors and the specific intersection geometry it encounters. This is why the video doesn't show FSD deliberately ignoring a red light in a clear-cut scenario, but rather the system making a call that, based on available evidence, appears to have been incorrect.

What Should FSD Owners Do Right Now?

• Review Your Profile Setting: Check your FSD configuration by navigating to Controls > Autopilot > Customize Autopilot and confirm which profile is active. If you're using Assertive mode, understand that the system will make tighter calls at intersections. Consider switching to Average if you regularly drive in dense urban traffic or unfamiliar areas where intersection geometry varies.
• Stay Visually Engaged at Every Intersection: FSD does not guarantee correct signal detection in all conditions. Keep your eyes on the traffic light itself, not the screen or dashboard. Lighting conditions, sun glare, partially obscured signals, and unusual intersection geometry can all affect the system's performance and decision-making.
• Keep Your Hands and Feet Ready: Tesla's own guidance requires drivers to be prepared to take control at any moment. At intersections specifically, position your foot to brake immediately if the car begins to proceed on a red light. This is the standard FSD still requires owners to meet on every trip.
• Report Incidents Immediately: If FSD makes a mistake while you're driving, use the voice command "Report" or tap the horn icon on the steering wheel immediately after the event. This sends a timestamped clip to Tesla for review, and early, accurate reporting is how these edge cases get addressed in future software updates.
• Check for Pending Software Updates: Navigate to Controls > Software and confirm your car is on the latest available version. Tesla pushes FSD behavioral fixes through over-the-air updates, and staying current is the simplest way to benefit from ongoing improvements to the system.

Is FSD Actually Getting Better?

FSD has improved substantially over successive versions, and red light compliance is generally reliable in straightforward conditions. However, "generally reliable" is not the same as infallible. Incidents like the one captured in the viral video serve as a reminder that the technology is still supervised autonomy, not full autonomy. The driver remains legally responsible for the vehicle's actions regardless of what the software decided to do.

This distinction matters because it shapes how owners should approach using the system. The debate playing out in social media comments about whether this even counts as running a red light is ultimately a distraction from the more useful question: if you were in that driver's seat, would you have caught the mistake in time to brake? That is the standard FSD still requires owners to meet.

What Do Recent Federal Investigations Say About FSD Safety?

The timing of this red light incident comes as federal regulators continue scrutinizing Tesla's self-driving technology. The National Transportation Safety Board recently concluded that a fatal crash in Katy, Texas, that killed a 76-year-old woman was not caused by FSD, but rather by driver override. The driver had pressed the accelerator to full speed, overriding the self-driving software and causing the Tesla Model 3 to race down a residential street at highway speeds before crashing into a brick home.

However, the National Highway Traffic Safety Administration (NHTSA) is conducting a separate, more expansive investigation. The agency opened an engineering analysis into FSD after discovering crashes where the system failed to alert drivers to take control in fog and other poor visibility conditions. This investigation covers 58 incidents in which Teslas reportedly violated traffic safety laws while using self-driving technology, leading to more than a dozen crashes and fires and nearly two dozen injuries. NHTSA has also opened 46 "special crash" investigations of Tesla's self-driving or driver-assistance technology over the past decade, with more than a dozen resulting in at least one fatality.

Tesla has since rebranded its feature from "Full Self-Driving" to "Full Self-Driving (Supervised)" in response to complaints from auto experts and regulators that the original name was misleading, since drivers must always keep their eyes on the road and be ready to take over at any time.

Why Are Tesla Shareholders Losing Patience With FSD Promises?

Beyond the technical and safety questions, Tesla shareholders are increasingly frustrated with the company's repeated failure to deliver on FSD-related timelines. In Tesla's Q2 2026 earnings Q&A portal, the most-upvoted shareholder questions reveal a shift in tone from asking about grand vision to demanding accountability for missed short-term goals.

One of the sharpest questions from shareholders references what they call Tesla's "most damaging admission": that Hardware 3 vehicles, which Tesla sold for years while promising they had everything needed for full autonomy, cannot deliver unsupervised FSD. Shareholders are asking what plan Tesla has for owners who paid for FSD on these older vehicles, including whether the company will offer free hardware upgrades, transfers, or refunds, and what timeline and cost Tesla has accrued for this liability.

Tesla has floated a plan to build micro-factories just to retrofit millions of Hardware 3 cars, but analysts have expressed skepticism that this plan will actually materialize. The company's incentive is to keep stalling until it has actually solved unsupervised FSD on newer hardware, which it still has not accomplished. Admitting the scale of the retrofit or refund liability before that point would be an unfavorable look after a decade of selling self-driving features that do not yet exist.

The broader pattern is clear: FSD remains a supervised autonomy system that requires constant driver attention, and recent incidents demonstrate that the technology still makes mistakes in real-world conditions. For owners using the system, staying alert, understanding your vehicle's profile settings, and reporting errors to Tesla remain the most practical steps to ensure safety on the road.