Tesla Reveals How It Tests FSD - A Series of Videos

November 25, 2024

By Not a Tesla App Staff

Not a Tesla App

Tesla has published a 16-post series covering a wide range of unique scenarios against which the company tests each FSD release. Tesla’s VP of AI, Ashok Elluswamy, also provided some additional context, which we’ll cover below.

These scenarios could be difficult for a regular driver to respond to and are a good demonstration of FSD’s capabilities. Let’s take a look at all the different scenarios that Tesla regularly tests against. According to Ashok, these tests are only one of 10 ways Tesla validates their software. These tests were done against FSD v12.5.6.3, the HW4 build that’s on approximately 20% of the fleet.

We’ve embedded each video below and also provided some additional information.

1. Reverse Cut-in (Occluded)

This first test is for a car reversing out of a parking space, while occluded (vision blocked) by another car or obstacle. In the test, the Model Y notices the incoming car and then brakes with space left over.

Every FSD release is rigorously tested, including rare and adversarial scenarios on closed courses — Here's 16 examples:

1. Reverse Cut-in (Occluded) pic.twitter.com/VWBKDgVuUc
— Tesla AI (@Tesla_AI) November 24, 2024

2. Peeking (Occluded)

In this video, it's hard to even spot the car on the right that’s “peeking” forward—it's occluded by bushes on the side of the road. FSD notices and stops in time to let the other vehicle safely pass.

2. Peeking (Occluded) pic.twitter.com/DO3RBhahdy
— Tesla AI (@Tesla_AI) November 24, 2024

3. Left Turn Cut-in

An incoming vehicle that takes a left turn to enter the same lane of travel as FSD - spotted, stopped, and then continuing smoothly. In the second shot, you can see FSD left a considerable amount of space to let the vehicle cut in.

3. Left Turn Cut-In pic.twitter.com/ie7VQ9Smtj
— Tesla AI (@Tesla_AI) November 24, 2024

4. Parallel Cut-in (Occluded)

This is honestly one of the most common scenarios on a highway - someone cuts in while obscured into your lane of travel. Once again, FSD does its thing with plenty of space to spare.

4. Parallel Cut-In (Occluded) pic.twitter.com/RbstvLU7Vo
— Tesla AI (@Tesla_AI) November 24, 2024

5. Yield for Oncoming During Overtake

FSD’s path planner plans an overtake around a stationary vehicle here, sees the oncoming traffic, and politely waits its turn to continue. This is another everyday scenario, especially on urban and suburban streets.

5. Yield for Oncoming During Overtake pic.twitter.com/hXWLCIEHu2
— Tesla AI (@Tesla_AI) November 24, 2024

6. Stop Sign Right-of-Way Violator

There are a surprising number of people who don’t know how stop signs work. However, FSD does know how they work and also knows what to do if others act unpredictably. This is one of the best demonstrations of FSD’s capability to react quickly and effectively to unpredictable behavior on the roads.

6. Stop Sign Right-of-Way Violator pic.twitter.com/OHfvzP9t6A
— Tesla AI (@Tesla_AI) November 24, 2024

7. Door Opening During Overtake

Another overtake scenario, but this time the vehicle being overtaken throws open its door into traffic. Not necessarily the wisest of moves, but humans are unpredictable. Good to see Tesla working to save its vehicles from both hitting the door or having the door hit with its new Blind Spot Monitoring While Parked feature.

7. Door Opening During Overtake pic.twitter.com/ZMDd3BWXI7
— Tesla AI (@Tesla_AI) November 24, 2024

8. Right Turn Harsh Braking

This scenario is another common one - someone is taking a right turn, and you expect them to complete the turn, but they go ahead and slam on the brakes. Here, FSD brakes in time - using Automatic Emergency Braking - and then continues safely. Tesla has been working to improve AEB and the scenarios it can react to - and these are all a part and parcel of FSD’s real-time and active safety features.

8. Right Turn Harsh Braking pic.twitter.com/s4PldABmhK
— Tesla AI (@Tesla_AI) November 24, 2024

9. Left Turn Across Path

This one is pretty clean-cut - someone takes a left turn even though you’re on your way through the intersection. This particular accident is one of the most common - 53% of cross-path accidents involve a left turn through an intersection where a side impact will be lethal. FSD can make a big difference - over 8,000 people die in North America alone in this particular scenario.

9. Left Turn Across Path pic.twitter.com/MYKj4Z352f
— Tesla AI (@Tesla_AI) November 24, 2024

10. Cut-Out to Static Cone

Here, FSD smoothly reacts to an object on the road as the vehicle ahead dodges it. We’d love to see this scenario done with different types of objects or debris, as this is another common item - especially with roadkill on country roads. A good demo of FSD’s collision avoidance maneuvers too!

10. Cut-Out to Static Cone pic.twitter.com/l4OYzLK6XB
— Tesla AI (@Tesla_AI) November 24, 2024

11. Dynamic Debris (Dropped Cone)

Taking it one step further, FSD successfully notices, slows down, stops itself from hitting the bouncing cone, and then makes it around safely. If you’ve ever seen someone strap something down in the bed of a pickup and forget to say “This ain’t going anywhere” - this is that exact scenario.

11. Dynamic Debris (Dropped Cone) pic.twitter.com/BMOKmrx9Ds
— Tesla AI (@Tesla_AI) November 24, 2024

12. U-Turn Cut-in (Occluded)

Another high-speed occluded cut-in, this time for a vehicle making a U-Turn from an oddly shaped intersection. FSD started braking the moment the first couple pixels of the Model Y were beyond the bush occluding vision. With a human’s reaction time, this would have resulted in a T-bone.

Ashok Elluswamy, Tesla’s Director of AI - mentioned that this is possible because of low latency and high intelligence - combined together, it enables FSD to make a threat assessment and decide what to do, very quickly. It also considers the potential of a rear-end collision - and there is collision avoidance baked into that decision-making.

12. U-Turn Cut-In (Occluded) pic.twitter.com/gp7H720mJd
— Tesla AI (@Tesla_AI) November 24, 2024

13. High-Speed Cut-out to Stationary Vehicle

Similar to the cone cut-out, this one happens at 73mph (117km/h)! FSD sees the car dodging, notices there’s an obstacle, and moves out of the way without dropping speed.

13. High Speed Cut-Out to Stationary Vehicle pic.twitter.com/qC8JQU4WH1
— Tesla AI (@Tesla_AI) November 24, 2024

14. High-Speed Harsh Braking

Another common scenario - in fact, the number one reason why pileups occur on highways is the harsh, sudden braking of vehicles in front. FSD once again notices and comes to a safe stop here.

14. High Speed Harsh Braking pic.twitter.com/YD76gh5b2m
— Tesla AI (@Tesla_AI) November 24, 2024

15. High-Speed Stationary Child

Tesla has been previously greatly criticized for its ability to come to a safe stop for children playing on the road. Here, Tesla is demonstrating its capability of doing so - once again with highway speeds of 73mph.

15. High Speed Stationary Child pic.twitter.com/sh8xoMo8eF
— Tesla AI (@Tesla_AI) November 24, 2024

16. High-Speed Crossing Child

And to really make the point - it can do it with a crossing child too. Tesla has made a strong commitment to safety for vulnerable road users, and this is a good way to show how it works.

16. High Speed Crossing Child pic.twitter.com/t6bxJpZOZn
— Tesla AI (@Tesla_AI) November 24, 2024

That’s a lot of unique scenarios that Tesla tests against - and each and every build has to be vetted against this huge list of different safety tests in order to ensure that the build that ends up in customer hands is as safe as possible. With FSD v13 looking like it's coming soon, we’re excited to see where this takes Tesla next.

With Musk announcing that FSD v13 is coming soon, it really is starting to feel like Unsupervised FSD and Robotaxi could be pushed out sometime next year.

Musk Confirms FSD V13 is Coming Soon

November 25, 2024

By Karan Singh

Not a Tesla App

Tesla announced an updated roadmap for FSD in late October. With it, they announced that FSD v13, the one that’s expected to make Unsupervised FSD feature complete (although not 100% reliable), would start being sent to employees by the end of the week.

We have yet to see any hints or sightings of employees testing FSD v13, but Elon Musk has now stated that FSD v13 is coming soon.

It sounds like Musk is talking about the employee release as it usually does, but it’s not immediately clear. Tesla originally predicted that select owners would receive FSD v13.3 around Thanksgiving.

Musk also mentioned that FSD v13 is trending to be about 500% better than the current build of v12.5.5.3 on the Cybertruck. If that’s true, Unsupervised FSD is just a regulatory leap away, rather than a technical or training challenge. However, let’s remember that Musk has often thrown out these vast improvement numbers that don’t appear to materialize when the update rolls out to customers. There’s no doubt that FSD v13 will be a big milestone and have several new features, such as Autopark at destination_, Unpark and more, but the much lower miles per intervention will likely come in later revisions.

Tesla has already seen drastic improvements this year, moving from V11.4.9 to v12.3.6, and then more recently to V12.5.4.2. Each successive build has had major improvements in how FSD is able to react and respond in real-time while also becoming smoother and safer.

We’re in for some exciting times as an even better FSD version makes its way to customers soon. And in order to really make the point, Tesla has also shown off how they conduct FSD Safety Testing in a series of videos, which we’ll include below.

Tesla Updates FSD From V12.3.6 to V12.5 on Update 2024.44

November 24, 2024

By Karan Singh

Not a Tesla App

Tesla maintains two primary software branches: the main feature branch and the FSD branch. In general, the FSD branch lags behind on new features pushed to the main branch but provides a more recent FSD version.

However, now Tesla is updating the main branch to a much more recent version of FSD.

Current FSD Build & Shadow Mode

Nowadays, the main branch always includes an older but stable build of FSD. It’s been on FSD V12.3.6 since July 2024. So, if you subscribe to FSD in North America, this is the FSD version you’ll receive until you get added to the FSD track.

Even if you don’t subscribe to or have purchased FSD, your vehicle has v12.3.6 on it. That includes vehicles in regions where FSD isn’t available for general use, such as Europe and China. In those cases, FSD runs in Shadow Mode, providing training data to Tesla if you’ve agreed to their data privacy policies. So Tesla is always analyzing what the vehicle would do compared to what the driver does. When there are contradictions, these are the clips and data Tesla will want to analyze.

FSD V12.5.4.2 on Main Branch

For the first time in five months, Tesla has now updated the baseline version of FSD in the main branch. The new version included with 2024.44 updates is FSD v12.5.4.2. This Tesla is updating the baseline FSD version to FSD V12.5.4.2

FSD 12.5 includes many features for a much smoother experience compared to FSD 12.3.6. Many users will appreciate that it gets rid of the steering wheel nag and instead relies on the cabin camera to provide real-time driver monitoring. This version also includes support for sunglasses with driver monitoring. It’ll be a big upgrade for anyone coming from FSD 12.3.6.

It's always a good thing when Tesla updates the baseline FSD version—that means that Tesla is confident that this new baseline is considerably safer and will continue to train the fleet against it.

What Update Am I Getting?

If you’re already on FSD V12.5.4.2, you’ll likely remain on that FSD build unless V13.3 manages to make its way to the public as Tesla originally planned, but that’s unlikely to happen before the Thanksgiving holiday. In all likelihood, you’ll be getting update 2024.44, which will give you some additional Tesla features while keeping you on the same FSD version.

For those who are already on 2024.44 - if you subscribe now, you’ll have V12.5.4.2 enabled on your vehicle.

If you have a Cybertruck, then you’ll receive update 2024.39.5 with FSD V12.5.5.3. They’re on a unique build for the moment, and this will likely be the case until Tesla acquires enough training data from the Cybertruck fleet.

What About FSD V12.5.6? V13?

FSD V12.5.6 is currently the build being provided to early access testers who have AI4 vehicles. It has new features like Driver Profiles, better lane change decisions, improved Max Speed Offset, and a few others. Tesla last pushed an update to FSD 12.5.6.2 in early November with some improvements to Driver Profiles.

That build is likely going to be deprecated as Tesla gets closer to releasing FSD v13, which they showed off at the We, Robot event back in October. The AI4 Model Ys and Cybercabs at We, Robot were running an early V13 build/

The updated FSD roadmap provided at the end of October mentioned that V13.3 will be the build that will make its way to customers sometime around Thanksgiving, but so far, no employee vehicles have been spotted with FSD v13.