Welcome to Tesla Motors Club
Discuss Tesla's Model S, Model 3, Model X, Model Y, Cybertruck, Roadster and More.
Register
  • We just completed a significant update, but we still have some fixes and adjustments to make, so please bear with us for the time being. Cheers!

Two reports of Teslas on AP hitting stopped vehicles in their lane on the freeway

Bladerskb

Senior Software Engineer
Oct 24, 2016
2,072
2,316
Michigan
The fire truck was a couple years ago, and I don’t think it would happen with today’s firmware.

I don’t know what happened with this new case in CT, but I’m guessing it is some form of mode confusion - the car didn’t think it was doing what the driver thinks it is doing.

As someone noted above, one obvious way for this to happen is the driver accidentally pressing the accelerator while they twist in the seat to look behind them.

Detecting stopped cars is a fundamental challenge for all Adaptive Cruise Control and Autonomous systems, but these days Tesla has gotten pretty good at it.

Huh this is just 4 months ago? Video: Tesla in autopilot mode bursts into flames
 

AviP

Member
Feb 8, 2018
202
148
New Canaan, CT
A known limitation of Autopilot is it won’t always brake for stopped cars at freeway speeds. In the fire truck incident, they did not have follow set to 1, it was set to one of the higher settings.
So, a known limitation of automation is the lack of automation in such not-so-unusual scenarios. :eek:
 

Fredneck

Member
Nov 8, 2019
478
-32
Pennsylvania

I nearly rear ended a stopped truck on the DC beltway while driving another vehicle. They were doing long term construction and had dump trucks lined up in the right hand driving lane at night. I saw the trucks but thought they were just moving slow, like 45. I looked over my shoulder to check the blind spot and when I looked back I barely had time to change lanes. Had there been a car in the next lane I would be dead.

Who stops dead on a major highway???

Would the Tesla have stopped for that? The alarm sounds when I don't slow as quickly behind traffic as the car thinks I should. Does it not see stopped vehicles at all? It would seem not according to the reports. So how can they ever expect to have fully autonomous cars? They work great, but tend to crash into stationary objects.
 

Fredneck

Member
Nov 8, 2019
478
-32
Pennsylvania
What are the push bumpers on police cars used for? One use is in police chases and trying to pit a perp's vehicle

The Pitt maneuver does not push with the front of the car. The push is sideways against the rear quarter panel making the car go sideways and spin out. So it would involve the police car front fender, not the bumper.
 
  • Like
Reactions: Mrcarcrazy

MP3Mike

Well-Known Member
Feb 1, 2016
14,978
31,853
Oregon
The Pitt maneuver does not push with the front of the car. The push is sideways against the rear quarter panel making the car go sideways and spin out. So it would involve the police car front fender, not the bumper.

On a police car their front bumper/pig pusher normally wraps around the sides and is what is used for a pit maneuver. (They don't want to damage their car in the process.)
 
  • Disagree
Reactions: Mrcarcrazy

RSS-X

Member
Aug 3, 2017
23
28
White Plains, NY
From the Tarrytown Daily Voice 12/08/2019 5:14 PM

[If Tesla can determine if autopilot was really engaged, will they share that information? Or was the driver just looking for an excuse?]


State Police Cruiser Rear-Ended By Tesla On 'Autopilot' On I-95





Screen_Shot_2019-12-08_at_4.56.12_PM_pwlfad

A look at the crash scene on I-95. Photo Credit: Connecticut State Police



A state patrol cruiser was among two vehicles hit by a Tesla driving in autopilot on a busy stretch of Interstate 95 in Fairfield County.

It happened on Saturday morning, Dec. 7 on the northbound side near Exit 15 in Norwalk, Connecticut State Police said.

Two police cars responded to a disabled vehicle in the left-center lane when the incident occurred. The troopers activated their emergency lights and set up a flare pattern behind the cruisers while waiting for a tow truck for the disabled vehicle.

The Tesla, a 2018 Tesla Model 3, hit the disabled vehicle and striking the rear of one of the cruisers, police said.

There were no injuries.

The unidentified man operating the Tesla Tesla said he was on autopilot while checking his dog in the backseat at the time of the crash, police said. The man was charged with reckless driving and reckless endangerment.

“This crash could’ve been avoided," U.S. Sen. Richard Blumenthal (D-Connecticut) said. "While autonomous vehicles are an exciting development, the tech is simply not ready to be deployed safely. Congress must act to protect the public from these vehicles until their safety can be assured.”
 

mhan00

Active Member
Oct 13, 2014
1,053
1,268
Southern California
The concerning thing is several other manufacturers have solved this problem. My son's subaru WRX would not have done this. Eyesight is considerably better than autopilot in this regard.

I very much doubt this is true. Coming up on stopped traffic is a known issue with every manufacturers’ Adaptive cruise systems because they’re designed to ignore most stationary objects they detect. You need to exercise due caution when using any system as of now. I had a couple incidents on my Volt where I had to manually slow down while on adaptive cruise while approaching stopped vehicles.
 

mhan00

Active Member
Oct 13, 2014
1,053
1,268
Southern California

MrMassTransit

Supporting Member
Mar 7, 2019
299
506
Washington, DC
Sure, since other manufacturers don't call it by that name when they have driver assist... or maybe they had none at all and still hit others.

Just my two cents as a (private) pilot: the name is completely accurate to what it does. In an aircraft, one can set the autopilot to various modes - keep the wings level, maintain a certain altitude, fly a certain heading, a certain speed (if auto throttle equipped), etc. Even with the auto pilot operating, the pilot needs to be monitor the situation and be ready to intervene at all times. If air traffic control issues a direction, if one needs to maneuver around other traffic, if there's an abnormal event, etc, the pilot needs to be ready to take control.

I realize that the average driver does not have experience using an aircraft autopilot. But everyone has a basic understanding of what an autopilot is (hence why Tesla uses the term) and I don't think anyone believes that once the autopilot is set the pilots take a nap, decide to read a book or watch a movie, or otherwise distract themselves in a way that would prevent them from monitoring the airplane.

I'm not sure why people hear the term autopilot and assume they can do things that they'd never be comfortable with a pilot on a commercial flight doing, even with the plane on autopilot (in a single-pilot scenario).
 

Evoforce

Active Member
Apr 19, 2017
1,478
1,760
Fountain Hills AZ
Just my two cents as a (private) pilot: the name is completely accurate to what it does. In an aircraft, one can set the autopilot to various modes - keep the wings level, maintain a certain altitude, fly a certain heading, a certain speed (if auto throttle equipped), etc. Even with the auto pilot operating, the pilot needs to be monitor the situation and be ready to intervene at all times. If air traffic control issues a direction, if one needs to maneuver around other traffic, if there's an abnormal event, etc, the pilot needs to be ready to take control.

I realize that the average driver does not have experience using an aircraft autopilot. But everyone has a basic understanding of what an autopilot is (hence why Tesla uses the term) and I don't think anyone believes that once the autopilot is set the pilots take a nap, decide to read a book or watch a movie, or otherwise distract themselves in a way that would prevent them from monitoring the airplane.

I'm not sure why people hear the term autopilot and assume they can do things that they'd never be comfortable with a pilot on a commercial flight doing, even with the plane on autopilot (in a single-pilot scenario).
I completely understand... I am a pilot myself! :) I do have to add though, as you know, we have been trained in the operation of the craft and must hold a rating in such type of craft to legally fly it. Should there be training for driving assist vehicles?
 
Last edited:
  • Like
Reactions: DOCAL

CharleyBC

Active Member
Jun 28, 2019
1,380
1,551
Talent, OR
AP might well have been engaged. Meanwhile, driver was disengaged, attending to dog, contrary to Tesla’s instructions for use of the feature. It’s well known that AP isn’t good at responding to things that are at a complete stop. If the story is accurate (some doubt, given the quality of the writing), this sounds like the driver was at fault as charged.
 

ngogas

Active Member
Sep 19, 2018
1,725
1,106
Utah
That is odd. Would love to hear the real story when the data are retrieved from Tesla. Hope they release some type of announcement if AP was not engaged and the driver thought it was.
 
  • Like
Reactions: Mrcarcrazy

Kilotango74

Active Member
Apr 2, 2019
1,332
1,129
Palmdale, CA
does blumenthol really believe that the guy would have paid more attention without autopilot enabled? People who are gonna checkout while driving are gonna check out..
Dosent really matter. All he need is events like this portrayed in the correct light to get some type of legislation banning autonomous systems in cars. Next thing you know we get an update that hobbles Autopilot until it is “proven” safe.
 
  • Like
Reactions: APotatoGod

About Us

Formed in 2006, Tesla Motors Club (TMC) was the first independent online Tesla community. Today it remains the largest and most dynamic community of Tesla enthusiasts. Learn more.

Do you value your experience at TMC? Consider becoming a Supporting Member of Tesla Motors Club. As a thank you for your contribution, you'll get nearly no ads in the Community and Groups sections. Additional perks are available depending on the level of contribution. Please visit the Account Upgrades page for more details.


SUPPORT TMC
Top