Tesla restores Park Assist using vision for vehicles without ultrasonic sensors
Tesla
Tesla has taken another significant step forward in its commitment to vision-based technology by introducing Tesla Vision Park Assist. This new feature reinstates the Park Assist distance measurements for Tesla vehicles without ultrasonic sensors (USS).
In October 2022, Tesla removed USS from Model 3, Model Y, and later, Model S and Model X, as part of the shift to its camera-based Autopilot system, Tesla Vision. However, the accompanying software to measure distances to nearby objects wasn't ready at the time, leaving owners of cars without USS to estimate their distance to surrounding things while parking.
The Latest Update Gets Even Bigger
The wait for a solution is finally over with the release of software version 2022.45.11, which includes the latest FSD Beta v11.3.2. As confirmed by well-known Tesla hacker @greentheonly, Tesla Vision Park Assist has been added to this update for vehicles without USS.
Improvements Over Ultrasonic Sensors
Although Tesla's vision-based approach is expected to not be as accurate as having ultrasonic sensors, at least initially, it does offer one improvement for the hardware-based solution.
The vision-based Park Assist system not only measures distances to objects at the front and rear of the car but also detects objects on the sides where there is no USS, providing 360° coverage around the vehicle.
It's not clear whether Tesla plans to add vision-based object detection to the sides of vehicles that have ultrasonic sensors in a future update.
The current release is limited to cars testing FSD Beta without USS, while vehicles with USS continue to operate with their sensors enabled. Although it might take some time for the feature to be deployed fleet-wide, Tesla Vision Park Assist demonstrates Tesla's progress in refining vision-based technology for parking assistance.
Who Will Get It
According to @greentheonly, the new Park Assist system is currently only available to customers in the United States and Canada who have purchased FSD and applied for access to the FSD Beta program. It is also currently limited to the Model 3 and Model Y. However, with visual and audio alerts of surrounding objects and the use of the occupancy network to predict high-definition outlines of objects around the vehicle, the vision-based system could eventually prove superior to Tesla's previous USS-based solution.
The release notes for Park Assist in 2022.45.11 state:
Tesla Vision Park Assist provides visual and audio alerts of surrounding objects. This feature uses the occupancy network to predict high-definition outlines of objects 360 degrees around the car.
Note: Tesla Vision Park Assist is for guidance purposes only and is not a substitute for an aware driver. Please be attentive and avoid obstacles as required.
Last year, Tesla's shift to a vision-only approach resulted in temporarily limiting or disabling some features, such as Summon, Smart Summon, Autopark, and Park Assist. Park Assist, which alerts drivers to nearby objects when traveling at less than five mph, appeared to be the easiest to implement. Now that Tesla has released Park Assist for vision-only vehicles, it is likely that Autopark, Summon, and Smart Summon will follow suit for Teslas without ultrasonic sensors in due course.
With Tesla Vision Park Assist, Tesla owners without ultrasonic sensors can now enjoy improved parking assistance, making it easier and safer to navigate tight parking spaces. As the feature continues to roll out and improve, Tesla demonstrates its dedication to advancing its vision-based technology for the benefit of its customers.
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Tesla’s Cybertruck has officially earned a 5-Star Safety Rating from the NHTSA—an impressive achievement given the vehicle’s design. The achievement demonstrates Tesla’s engineering prowess. As one engineer points out, it wasn’t an easy feat.
Interestingly, the NHTSA only recently disclosed the results, despite the crash tests being completed a while ago. According to Lars Moravy, Tesla’s VP of Vehicle Engineering, the team had been aware of the 5-star rating for quite some time. While the reason for the delay remains unclear, now that the results are public, Tesla’s engineers can finally share how they achieved the rating.
Crumple Zones
Wes Morril, the Cybertruck’s Lead Engineer, wrote about the crash test video on X recently, addressing the claims that the Cybertruck doesn’t have a crumple zone. He also posted a side-by-side video (below) of the engineering analysis and the crash test itself.
Engineered Crash Safety
There’s a lot of engineering precision at play when a Cybertruck is involved in a crash. Unlike traditional crash structures that rely on crash cans and collapse points, the Cybertruck’s front gigacasting is designed to absorb and redirect impact forces in a highly controlled manner.
It all starts with the bumper beam, which crushes within the first few milliseconds of a high-speed impact. At the same time, the vehicle’s sensors rapidly analyze the crash dynamics and determine the optimal deployment of safety restraints, including airbags and seat belt pre-tensioners. These split-second actions are crucial in keeping occupants safe.
As the crash progresses, the vehicle’s structure deforms in a carefully engineered sequence. The drive unit cradle bends, directing the solid drive unit downward and out of the way, allowing the gigacasting to begin absorbing impact forces.
The casting crushes cell by cell, methodically dissipating energy in a controlled manner. This gradual deceleration reduces the g-forces transferred to occupants, making the crash much less severe. As the gigacast begins crushing, the safety restraints are deployed.
As Wes points out in his post - you can see how accurate the virtual analysis and modeling were. The video shows the simulated crash side by side with the real-life crash test and they’re almost identical. All that virtual testing helps provide feedback into the loop to design a better and safer system - one that is uniquely different than any other vehicle on the road.
All the armchair experts claimed the Cybertruck has no crumple zone and I get it, the proportions seem impossible. It was a tough one and there is a lot of engineering that went into it. Let me break it down for you:
Tesla has pioneered the use of single-piece castings for the front and rear sections of their vehicles, thanks to its innovative Gigapress process. Many automakers are now following suit, as this approach allows the crash structure to be integrated directly into the casting.
This makes the castings not only safer but also easier to manufacture in a single step, reducing costs and improving repairability. For example, replacing the entire rear frame of a Cybertruck is estimated to cost under $10,000 USD, with most of the expense coming from labor, according to estimates shared on X after high-speed rear collisions.
These insights come from Sandy Munro’s interview (posted below) with Lars Moravy, Tesla’s VP of Vehicle Engineering, highlighting how these advancements contribute to the improvements in Tesla’s latest vehicles, including the New Model Y.
However, with the new Model Y, Tesla has decided to go a different route and eliminated the front gigacast.
No Front Casting
Tesla’s factories aren’t equipped to produce both front and rear castings for the Model Y. Only Giga Texas and Giga Berlin used structural battery packs, but these were quickly phased out due to the underwhelming performance of the first-generation 4680 battery.
Tesla has gone back to building a common body across the globe, increasing part interchangeability and reducing supply chain complexity across the four factories that produce the Model Y. They’ve instead improved and reduced the number of unique parts up front to help simplify assembly and repair.
There is still potential for Tesla to switch back to using a front and rear casting - especially with their innovative unboxed assembly method. However, that will also require Tesla to begin using a structural battery pack again, which could potentially happen in the future with new battery technology.
Rear Casting Improvements
The rear casting has been completely redesigned, shedding 7 kg (15.4 lbs) and cutting machining time in half. Originally weighing around 67 kg (147 lbs), the new casting is now approximately 60 kg (132 lbs).
This 15% weight reduction improves both vehicle dynamics and range while also increasing the rear structure’s stiffness, reducing body flex during maneuvers.
Tesla leveraged its in-house fluid dynamics software to optimize the design, resulting in castings that resemble organic structures in some areas and flowing river patterns in others. Additionally, manufacturing efficiency has dramatically improved—the casting process, which originally took 180 seconds per part, has been reduced to just 75 seconds, a nearly 60% time reduction per unit.
Advancements in die-casting machines and cooling systems have allowed @Tesla to dramatically reduce cycle times and improve dimensional stability. pic.twitter.com/WB5ji67rvV
Tesla’s new casting method incorporates conformal cooling, which cools the die directly within the gigapress. Tesla has been refining the die-casting machines and collaborating with manufacturers to improve the gigapress process.
In 2023, Tesla patented a thermal control unit for the casting process. This system uses real-time temperature analysis and precise mixing of metal streams to optimize casting quality. SETI Park, which covers Tesla’s manufacturing patents on X, offers a great series for those interested in learning more.
The new system allows Tesla to control the flow of cooling liquid, precisely directing water to different parts of the die, cooling them at varying rates. This enables faster material flow and quicker cooling, improving both dimensional stability and the speed of removing the part from the press for the next stage.
With these new process improvements, Tesla now rolls out a new Model Y at Giga Berlin, Giga Texas, and Fremont every 43 seconds—an astounding achievement in auto manufacturing. Meanwhile, Giga Shanghai operates two Model Y lines, delivering a completed vehicle every 35 seconds.
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