Tesla Upgrades Automatic Emergency Braking to React to Perpendicular Dangers

Tesla has made improvements to automatic emergency braking

Tesla

Tesla has introduced notable upgrades to its Automatic Emergency Braking (AEB) system in a recent FSD Beta update. Initially, FSD Beta 11.3, which only went out to Tesla employees, included a significant update to Tesla's automatic emergency braking.

However, when FSD Beta 11.3.1 was released to public testers, the release notes significantly differed from the employee version, leaving some uncertainty regarding the status of AEB enhancements.

Other features were removed from the release notes in FSD Beta 11.3.1, including Voice Drive Notes, which was clearly still available in the public beta. It's not clear whether the changes to the release notes was a mistake or if Tesla chosen to highlight changes between 11.3 and 11.3.1.

AEB Now Detects Vehicles Moving Across Tesla's Path

The company's impact report has recently confirmed that the improved AEB system was incorporated into the FSD Beta. The enhancements include detecting and responding to vehicles moving perpendicular to the Tesla. This advanced feature aims to reduce the likelihood of accidents occurring when other vehicles cross Tesla's path, such as running red lights or cutting the Tesla off.

This development represents a significant leap forward in AEB technology, as traditional systems mainly focus on detecting and reacting to objects and vehicles directly in front of the car. With the ability to detect crossing vehicles, Tesla's upgraded AEB system offers increased safety and assistance to drivers.

Release Notes

The release notes in Tesla FSD Beta update v11.3 say:

Expanded Automatic Emergency Braking (AEB) to handle vehicles that cross ego's path. This includes cases where other vehicles run their red light or turn across ego's path, stealing the right-of-way. Replay of previous collisions of this type suggests that 49% of the events would be mitigated by the new behavior. This improvement is now active in both manual driving and autopilot operation.

Safety Improvements Tested Extensively with Fleet Miles

Tesla has rigorously tested and validated these AEB advancements by utilizing millions of fleet miles in shadow mode. The Tesla Vision system, which consists of eight cameras, allows Tesla vehicles to identify and react to oncoming vehicles well beyond the range of traditional sensors. In addition, the Automatic Emergency Braking system offers a loud warning and rapid braking when a Tesla vehicle senses an impending collision, and the driver has not intervened.

These AEB enhancements demonstrate Tesla's commitment to improving road safety and minimizing accident risks. In 2021, US pedestrian and road-user fatalities reached their highest levels, with a 53% increase since 2012 and over 75% of deaths at night. Tesla's Model S, Model 3, Model X, and Model Y have all received five-star ratings from Euro NCAP, including for nighttime pedestrian crash avoidance. Furthermore, the Model 3 and Model Y have earned a "Superior" rating from IIHS for the nighttime performance of their pedestrian AEB systems.

Improved AEB System Expected to Reach All Tesla Owners

The availability of the improved AEB for all Tesla owners remains uncertain, as FSD Beta is currently separate from other updates. However, considering Tesla's history of prioritizing safety features, it is likely that the upgraded Automatic Emergency Braking system will eventually be made accessible to all users. This move would further solidify Tesla's position as a manufacturer of some of the safest vehicles available today.

Moreover, Tesla's commitment to vehicle safety and continuous software updates demonstrates its dedication to its customers. As Tesla learns more about real-world driving scenarios and collects data from its fleet, it will continue refining and enhancing its driver assistance systems. The result is a safer and more reliable driving experience for Tesla owners and other road users.

Integrating the improved AEB system into Tesla's FSD Beta may pave the way for more advanced driver assistance features. In addition, by incorporating cutting-edge technology and prioritizing safety, Tesla sets a high standard for other automakers to follow in creating vehicles that protect their occupants and other road users.

Best Tesla News of the Week

Tesla's Smart Summon Patent Describes How It Works and Hints at Future Abilities

Not a Tesla App

Tesla’s Summon, Smart Summon, and Actually Smart Summon features have long been a source of fascination (and occasional frustration), offering FSD users a glimpse into a future where your vehicle picks you up.

While we await further improvements to Actually Smart Summon to increase reliability and range, a recently published Tesla patent (US20250068166A1) provides an inside look into the intricate AI and sensor technologies that make these complex, low-speed autonomous maneuvers possible.

Notably, the list of inventors on this patent reads like a "who's who" of Tesla's AI and Autopilot leadership, including Elon Musk and former Director of AI Andrej Karpathy, among many others.

Though the patent is a continuation of earlier work, with some dates stretching back to 2019, it lays out the core logic that powers Tesla's vision-based system.

Step-by-Step Navigation

Tesla’s patent details a sophisticated system designed to allow a vehicle to autonomously navigate from its current position to a target location specified by a remote user. The remote user can also designate themselves as the target, even while they’re moving, and have the vehicle meet them.

This process begins with destination and target acquisition. The system is designed to receive a target geographical location from a user, for example, by dropping a pin via the Tesla app. Alternatively, it can use a “Come to Me” feature, where the car navigates to the user’s dynamic GPS location. In this same section, the patent also mentions the ability to handle altitude, which is crucial for multi-story parking garages, and even handle final orientations at arrival.

Occupancy Grid

At the heart of the system is the use of sensor data to perceive the environment. This is done through Tesla Vision, which builds a representation of the surrounding environment, similar to how FSD maps and builds a 3D world in which to navigate. A neural network processes this environment to determine drivable space and generate an “occupancy grid.” This grid maps the area around the vehicle, detailing drivable paths versus obstacles.

The patent still references the use of alternative sensors, like ultrasonic sensors and radar, even though Tesla does not use them anymore. The system can also load saved occupancy grids from when the car was parked to improve initial accuracy.

Path Planner

Once the environment is understood, a Path Planner Module calculates an intelligent and optimal path to the target. This isn’t just the shortest route; the system uses cost functions to evaluate potential paths, penalizing options with sharp turns, frequent forward/reverse changes, or a higher likelihood of encountering obstacles. The path planning also considers the vehicle’s specific operating dynamics, like its turning radius. Interestingly, the Path Planner Module can also handle multi-part destinations with waypoints - a feature that isn’t available yet on today’s version of Actually Smart Summon.

Generating Commands

Once the path is determined, the Vehicle Controller takes the path and translates it into commands for the vehicle actuators, which control the steering, acceleration, and braking to navigate the vehicle along the planned route. As the vehicle moves, the Path Planner continues to recalculate and adjust the path as required.

Since Actually Smart Summon is nearly autonomous with the exception of the user having to hold the Summon button (app update hints at not having to hold the button soon), continuous safety checks are integral. This includes using the Path Planner and the occupancy grid to judge if there is a chance for a collision, and overriding navigation if necessary. The patent also mentions the possibility of users remotely controlling aspects like steering and speed but with continuous safety overrides in place. This is another cool little feature that Tesla has yet to include with today’s Actually Smart Summon - being able to control your full-size car like an RC car. This feature could be used for robotaxis if the vehicles get stuck and need to be tele-operated.

Reaching the Target

Upon reaching the destination, or the closest safe approximation (like the other side of a road), the system can trigger various actions. These include sending a notification to the user, turning on the interior or exterior lights, adjusting climate control, and unlocking or opening the doors. Another yet-to-arrive feature here is the fact that the destination triggers in the patent also include correctly orienting the vehicle for charging if the destination is a charger. This part of the patent doesn’t reference wireless charging, but we’re sure there’s more to this than it seems.

A Glimpse Into the Future

While this patent has dates stretching back to 2019, its recent publication as a continued application tells us that Tesla is still actively iterating on its Summon functionality. It details a comprehensive system that has been well thought out for complex, confined spaces, which will be key for both today’s convenience features like Actually Smart Summon - but also for Tesla’s upcoming robotaxis.

The depth of engineering described, from neural network-based perception to sophisticated path planning and safety protocols, explains the impressive capabilities of Tesla's Summon features when they work well and the inherent challenges in making them robust across an infinite variety of real-world scenarios. As Tesla continues to refine its AI, the foundational principles laid out in this patent will undoubtedly continue to evolve, actually bringing "Actually Smart Summon" to reality.

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Tesla’s Impressive Sound Systems Are Missing One Thing: True Spatial Audio [Opinion]

Jack27 - Cybertruck Owner's Forum

Tesla has consistently demonstrated a commitment to high-quality audio hardware in its vehicles. The sound engineers go through a thorough design process - including integrating the subwoofer’s sound flow through the Cybertruck’s hollow body sections. Tesla offers, by and far, one of the best OEM audio experiences in its price range.

However, physical components and engineering magic aside, the current software that drives Tesla’s audio experience is sub-par when compared to higher-end audio systems on the market. It falls short of delivering truly spatial, three-dimensional audio that many audiophiles and even discerning casual listeners have come to appreciate from the likes of $100 earbuds with spatial audio support from their cell phones.

This really feels like a missed opportunity, especially when Tesla used to offer “Dolby Surround” in the past.

Immersive Sound… Kind Of

Tesla’s proprietary Immersive Sound option widens the sound stage by creating a surround-sound-like effect within the vehicle. It has evolved over the years from a simple “Off/Standard/High” to include slightly more granular control, as well as an Auto mode that intelligently adjusts the level of immersion based on the content being played.

For many, including myself, the experience often feels more like an improved stereo field rather than a genuine multi-dimensional soundscape. Even when set to High and paired with Hi-Fi downloaded music from sources like TIDAL, Immersive Sound struggles to open up the sound stage. The sense of height and precise placement of individual sound sources - hallmarks of spatial audio - are missing, leading to an audio presentation that, while clear and powerful, ultimately feels a little flat.

In reality, Immersive Sound often just turns on the A-pillar speakers and uses them for a wider set of sounds than they are normally used for, which really feels rather disappointing. 

A good example is Imagine Dragons’ song Believer. Try listening to it with Immersive Sound on, and then off. If you’ve got headphones with Spatial Sound / Dolby Atmos support, try listening to the same song there. You’ll find a world of difference.

The Gold Standard: Dolby Atmos

Technology like Dolby Atmos has become the gold standard for listening to spatial audio - and represents a substantial step above traditional “Surround Sound” and Tesla’s current Immersive Sound. Dolby Atmos does a lot to achieve that truly three-dimensional audio experience.

They use object-based audio, where sounds are treated as individual objects that can be placed and moved precisely in a 3D space rather than being confined to specific channels, like with 5.1 or 7.1 Surround Sound. They also include a vertical dimension, making the sound feel like it’s coming from above, below, or all around. This is done through dedicated processing (and sometimes dedicated down-facing speakers) to render the sound in a fully 3D space.

All that, alongside the ability to render complex mixes like 5.1 and 7.1 surround sound with exceptional clarity, means that individual instruments and vocal layers maintain their distinction.

The overall result is a refined listening experience that is genuine, more engaging, and compelling. It isn’t just better for music too - it makes video content consumption better with spatial sound matching what’s being displayed on-screen.

Amazing Hardware Deserves Amazing Software

Tesla’s investment in custom-engineered audio systems is commendable. The 17 speakers in the Cybertruck represent one of the best OEM-designed speaker arrays capable of producing detailed and dynamic sound. 

However, this amazing hardware is being asked to perform an orchestra with one hand tied behind its back. Without the extra spatial rendering capabilities of an industry standard like Dolby Atmos, we may as well only have five speakers. Tesla isn’t taking full advantage of the great hardware in these vehicles by letting the software lag behind.

Implementation

The barrier to entry for true surround sound may not be as high as some imagine; for perspective, a consumer license for Dolby Atmos on a PC is remarkably affordable - only $14.99. While commercial automotive licensing is on a different scale, this illustrates that access to the core technology isn't inherently prohibitive, suggesting it's more a matter of prioritization for Tesla.

Some might perceive the engineering effort to implement and tune true spatial audio as immense, but it's worth noting that advancements in calibration are constantly being made. For example, in a controlled home environment, initial spatial sound system tuning can sometimes be accomplished in as little as an hour. 

Naturally, the acoustic complexity and variability of a car interior demand a more involved process, but for a company with Tesla's engineering prowess, creating an exceptional in-car spatial audio experience is well within reach and arguably less of a monumental task than many might think.

This isn’t just about satisfying those with a particular ear for sound - a truly exceptional spatial sound system like Atmos, or at least a functional in-house one that genuinely matches its capabilities, would be a huge bonus for Tesla’s flagship vehicles. It would help to elevate the experience, especially as Tesla continues to narrow the premium feel between their flagship vehicles and their everyday vehicles.

Tesla builds vehicles with some of the most impressive audio hardware on the market, so there’s no reason not to match this with the most impressive audio software. Let’s bring back Dolby surround sound support.

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