Tesla Model 3 On Autopilot In Heavy Stop-Go Traffic – Video

Tesla Model 3


It seems the Tesla Model 3 on Autopilot fares pretty well in stop-and-go traffic.

Despite many not-so-good reports as of late about Tesla’s second-generation Autopilot, the Model 3 here seems to do a superb job here in heavy traffic. As you can clearly see, the driver is not getting involved. At the beginning, the traffic is moving as fast as 34 mph. Later, you see the car at much slower speeds, coming to a complete stop, and then taking off again.

Tesla Model 3

Tesla Model 3 Autopilot – Check out the “Rainbow Road” easter egg.

Of course, stop-and-go traffic is probably one of the easier tasks for the Autopilot system to handle. It’s really not any different than adaptive cruise control, or more specifically, adaptive cruise control with stop-and-go, which is found on many vehicles today.

In a situation such as this, there’s really no dealing with high speeds, nor is there any worry about tight curves, narrow shoulders, merging or passing maneuvers, or inadequate roadway markings. It’s just a matter of the car knowing the speed and distance of the cars ahead.

It’s still nice to see more footage of a Model 3 in action with Autopilot engaged, doing exactly what’s expected. Hopefully, by the time customer deliveries start and there are more Model 3s hitting our roadways, Autopilot 2 will be at complete parity with Autopilot 1. We shall see …

Video Description via Stannous2 T on YouTube:

Autopilot works very well in heavy traffic. We stuck in a stop and go traffic for ~45 min on 5S thru Camp Pendleton.

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24 Comments on "Tesla Model 3 On Autopilot In Heavy Stop-Go Traffic – Video"

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Given we’re several weeks away from possible winter conditions up here in the north, I thought I’d ask…

Does anyone know how autopilot (any manufacturer, any generation) will work when the lines on the road are covered in snow, or enough sand/salt to obscure them?
How about roads with no lines (quite common outside of the city on tertiary roads)?

No they don’t.

The Lidar-based systems use a high resolution map to navigate, so lane lines are not needed.

Heavy snows transform the landscape, however. Waymo will apparently deploy in warm climates first. Buffalo, NY will come after they add logic to handle snowscapes.

I meant to say high resolution 3D maps…..

If Tesla’s Autosteer does not “see” the line markings it uses the car infront as a guide, so in a stop and go scenario it will just follow it. If there is no car infront it uses an aggregated by other Teslas map of the road and can loosely follow that pending the accuracy of its current location.

Hmmm, how does it manage that? I only know of three ways to know your location:
1) GPS
2) ground mounted beacons
3) reference to local features (sonar/lidar real-time mapping)

GPS is no where near precise enough to stay in a lane, I don’t think beacons are used (anywhere?) and I would think that #3 would be insanely complicated given some landscapes are barren and others change too often to keep track of.

So what is Tesla using for location then?

GPS and inertial guidance. It works over a relatively short distance until it regains a lock on the lines or vehicle ahead.

I can’t speak to exactly how Tesla is handling the situation, and exactly how they handle it may be changing as their system improves. But ideally, at least in theory, autonomous driving involves each individual car building up a SLAM (Simultaneous Localization And Mapping) 3D virtual map of that car’s environment, using the car’s long-range sensors, coupled with previously stored 3D mapping data, which is something like what is shown on a car’s GPS navigation screen but more detailed. The car’s “autopilot” synchronizing its SLAM with stored 3D maps involves use of landmarks; obviously whoever chooses such landmarks will want them to be things which will never move! You are correct to point out that GPS location isn’t precise enough for such things as lane-keeping, but perhaps it’s good enough to allow the car to sync its SLAM with stored 3D maps. Reliable navigation in a snow-covered environment will remain a challenge, at least for now. I’m guessing that challenge and off-road driving will be the last things that fully autonomous cars will be able to handle reliably… altho “reliable” may be too much to ever hope for when it comes to off-road driving. I don’t think it’s reasonable to… Read more »

“If Tesla’s Autosteer does not “see” the line markings it uses the car infront as a guide”
I hope not! One sheep goes of the cliff and the entire herd follows.

It still has the camera, radar and ultrasonics to detect obstacles, it does not follow the vehicle blindly, but it does use it as the primary guidance.

It also has a human driver with their hands on the steering wheel, foot near the pedals, and eyes on the road. Remember that it is just a driver assist feature.

Various youtube videos on it working after 7.1 of autopilot. It does not strictly need lines. That is a simplistic view of how it works. I’ve personally seen it work on a back country gravel road (obviously no lane markings). I would only use it on a highway with good traffic if the lane markings were not great.

“Of course, stop-and-go traffic is probably one of the easier tasks for the Autopilot system to handle”

For people living in LA, that would be good enough since the entire city (and most of county) is in perpetual traffic jam.

Serial anti tesla troll thomas

Well at least my 7 year old Infiniti can also do the ACC. I have only to steer.

Now Nissan added steering as well. $5000 is too steep for what is shown. For that kind of money it had better be able to change lanes.

For that kind of money it better be able to make me an omelette!

Tesla just brought online the single largest supercharging center in the world. A 50 stall Supercharger in Shanghai


AP 2 is just ACC that’s all


Nix you have a tesla, then post video one then

You want videos? Go watch YouTube.

Tesla also just released full highway speed automatic braking for emergencies for cars with the latest hardware upgrade.

Toyota does that, late to the party

A Google map and big red line of traffic. The Nurburgring time of the Model 3 could be 6 minutes, and people would still report Autopilot its best virtue.

Come’n get it.