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 | RSS (Feedly).

Iqtidar Ali
Iqtidar Alihttp://www.teslaoracle.com
Iqtidar has been writing about Tesla, Elon Musk, and EVs for more than 3 years on XAutoWorld.com, many of his articles have been republished on CleanTechnica and InsideEVs, maintains a healthy relationship with the Tesla community across the Social Media sphere. You can reach him on Twitter @IqtidarAlii

LEAVE A REPLY

Please enter your comment!
Please enter your name here

Latest News

Tesla Cybertruck starts at $60,990 — the AWD variant might qualify for the Federal Tax Credit

Tesla (TSLA) and its CEO Elon Musk revealed everything about the Cybertruck that should been unveiled yesterday. Several of...

Cybertruck Delivery Event live updates, Watch the live-stream recording, more

Tesla has built a Cybertruck-themed triangular entrance gate at Giga Texas for the Delivery Event that is about to...

Tesla releases Cybertruck Delivery Event details, entry will require QR code scanning, TSLA stock price surges, more

Tesla (TSLA) released details of the Cybertruck Delivery Event today. The event is scheduled to take place at the...

Watch the Tesla Cybertruck drive through the salty sea water like a boss

Tesla Cybertruck is currently the most anticipated vehicle of the entire automotive industry globally. Tesla showrooms are getting rushed...
- Advertisement -

Elon Musk’s iPhone wallpaper of Starship’s 2nd launch tells us a bit about his phone preferences

CEO of Tesla and SpaceX Elon Musk shared his personal phone's wallpaper on X (Twitter) a couple of days...

2nd Starship launch was a success, it went way beyond stage separation and then missing in space

After 7 months of excitement, hurdles, and wait, SpaceX finally launched Starship for the 2nd time. Although both Super...

SpaceX delays Starship launch to Saturday 18th Nov to fix a grid fin on the Super Heavy rocket, says Elon Musk

SpaceX CEO Elon Musk has announced on his social media platform X that the 2nd Starship launch which was...

Tesla Tips & Tricks

Tesla Model S and Model X owners can switch the on-screen media player position with a single tap (video)

Tesla (TSLA) keeps improving car features and the screen...

Watch what happens when the Tesla Model 3 screen is smashed with a hammer while driving

A tech YouTuber Taras Maksimuk has performed a very...

Tesla phone app lets owners remotely melt snow off their cars (video)

Tesla cars have some super-nice climate features that other...

Tesla Quarterly Reports & Eearnings

- Advertisement -

You might also likeRELATED
Recommended for You