Tesla tests FSD V12 on Chuck Cook’s unprotected left turn (UPL) in Jacksonville, Florida

-

-Advertisement-

Well-known FSD Beta tester Chuck Cook spotted a Tesla Model Y testing FSD V12 yesterday. The car was making rounds of the test loop where he usually drives his Tesla Model 3 on FSD Beta for testing the system and sending feedback to Tesa.

Chuck’s test loop is located in Jacksonville (JAX), Florida — and has a complex unprotected left turn (UPL). Tesla has officially named such difficult UPLs as “Chuck Cook style” in the Release Notes of FSD Beta 10.13.

The Chuck Cook UPL has been a tough challenge for the Tesla Autopilot team. Chuck and Tesla’s engineers have been training Autopilot FSD Beta on this left turn for more than a year now. He also met with Tesla Autopilot engineers at AI Day 2022 to discuss the performance of FSD Beta on this and such UPLs.

But the variable light to medium and heavy traffic plus other vehicles intersecting from the front make this turn a tough challenge for Tesla Autopilot.

Tesla Model Y Accessories by EVANNEX (Sponsored Banner).
– Sponsored –

A Tesla Model Y with a manufacturer license plate from Texas ticked Chuck’s curiosity. According to him, these testing vehicles have been in JAX for almost this entire week. Yesterday he decided to record the activities of Tesla’s official Model Y at this UPL which looked like an FSD V12 testing and evaluation (video below).

According to Chuck, he last saw official Tesla vehicles testing FSD Beta 10.6.9 earlier this year in the spring season. Chuck explains the difficulty of this UPL as follows:

It’s a very difficult turn for those of you who are not familiar with it. It’s a 3-lane divided highway with a median. Speed limit is around 50 miles an hour (mph) and the cars can go much faster than that, which makes the gap selection the most difficult part for crossing this road in positioning yourself in the median to continue on the 2nd part.

FSD V12 Tesla Model Y test vehicle creeping forward at Chuck Cook's unprotected left turn in Jacksonville, FL.
FSD V12 Tesla Model Y test vehicle creeping forward at Chuck Cook’s unprotected left turn in Jacksonville, FL. Credit: Chuck Cook / YouTube (video below).
– Advertisement –

Although Chuck did not talk to the Autopilot testing driver in this instance, the way this Tesla Model Y halts at the stop line strongly suggests Tesla Full Self-Driving behavior. Since Chuck is testing the software for a long time now, he can easily differentiate between the creep behavior of human vs. Autopilot drivers.

According to Chuck Cook, the creep stance and behavior of the Tesla Model Y closely resembles to that in FSD Beta version 11.4.7.2.

FSD Beta 11.4.7.2 is the latest version that Tesla has rolled out for non-employee testers. FSD V12 is exclusively being tested by select Tesla employees before it goes out to Tesla vehicle owners outside the company.

Autopilot FSD 12 is the non-beta version of Tesla’s Full Self-Driving software. As soon as the beta testing program is concluded, Tesla will release this update to Tesla owners who have bought the $12,000 Full Self-Driving Capability package.

Tesla CEO Elon Musk demonstrated FSD 12 in a ~42-min live-stream video on X (Twitter) in August. His personal Tesla Model S has FSD V12 installed on it and he revealed during the demo drive that drivers around the world are testing it every day.

So, what we can see in the following video by Chuck Cook, FSD 12 in its several attempts, took the Chuck Cook’s UPL very precisely. Tesla engineers and staff has been testing and perfecting it for about a week at this location, training the Tesla AI neural net how to handle complex situations like this. Let’s watch!

Video: Tesla Advanced Driver’s Assistance System (ADAS) driver testing Chuck Cook’s unprotected left turn (UPL) in Jacksonville, FL on 5th October 2025.
– Advertisement –

Related

Furthe reading on FSD 12.

Stay tuned for constant Tesla updates, follow us on: 
Google News | Flipboard | X (Twitter) | WhatsApp Channel | RSS (Feedly).

Iqtidar Ali
Iqtidar Alihttp://www.teslaoracle.com
Author of more than 1500 articles on Tesla, SpaceX, and EVs. His work has been liked and tweeted by Elon Musk and other prominent influencers. You can reach him on Twitter @IqtidarAlii

Latest News

Cop pulls over a Tesla Model Y Juniper because of its taillight design

An owner of the new Tesla Model Y Juniper shared his recent experience where a police officer in Indiana...

Watch the Tesla Semi peak charging at 1.2 Megawatts

To welcome the new year with renewed excitement and enthusiasm, Tesla (TSLA) showed the impressive charging capability of its...

Tesla Q4 2025: vehicle deliveries drop, QoQ and YoY comparisons, energy business shows compelling growth, more

Tesla (NASDAQ: TSLA) posted its Q4 2025 and Year 2025 vehicle production, deliveries, and energy storage deployment numbers. In Q4...

Tesla Model Y falls off a cliff in China, occupants walk away safely

Just before Christmas, a video of a crashed Tesla Model Y went viral on Chinese social media. This Model...
- Advertisement -

Stay tuned with the updates in your Inbox

Get the latest Tesla FSD, Software Updates, Starship News in Your inbox.

By hitting the Subscribe button you agree to receiving email communications from TeslaOracle.com.
We don't email everyday. Frequency will be weekly at max.

SpaceX pushes to stay on track for Flight 12 Starship launch schedule, watch the Christmas Parade at Starbase, Texas

Having a little fun during the end-of-year holidays is not bad at all, especially if the past year has...

SpaceX shares stunning videos of Flight 11 Starship and Booster 15 landings

Monday's Starship Flight 11 launch was a success by all measures as SpaceX met all of its objectives exactly...

Starship Flight 11: Read live updates, watch live-stream recordings of the launch

SpaceX has just confirmed that they're attempting today's eleventh Starship launch and landing test. You can check out the...

Tesla Tips & Tricks

Leaked photo of the Tesla Cybertruck bed reveals 3 power outlets of 120 and 240 volts

As close as we get to the Cybertruck Delivery...

Cybertruck rust or just dust — and how to fix the issue

It has been almost 3 months since Tesla started...

Tesla Quarterly Reports & Eearnings

Tesla Q3 2025: Financial updates and key takeaways from the earnings call

Tesla (TSLA) released its Q3 2025 financial results and...

Tesla (TSLA) crushes critics by delivering around ~500k EVs in Q3 2025

Tesla (TSLA) released its Q3 2025 vehicle production and...

Stay tuned with the updates in your Inbox

Get the latest Tesla FSD, Software Updates, Starship News in Your inbox.

By hitting the Subscribe button you agree to receiving email communications from TeslaOracle.com.
We don't email everyday. Frequency will be weekly at max.
- Advertisement -

You might also likeRELATED
Recommended for You