Six cars aced new pedestrian detection tests
arstechnica.com
arstechnica.com
1: https://nacto.org/docs/usdg/relationship_between_speed_risk_...
If a road used to carry 1000-cars per hour, it will only carry 500-cars per hour if you drop the speed limit from 35 -> 18. Effectively doubling the length of time for congestion.
You can get around this by building twice as many roads I guess, but cities don't really have any more room.
Also, the constraint on street capacity is intersections in the vast majority of cases. Until you remove intersections nothing else really else matters.
If you instead assume 1-car lengths worth of distance at both 36mph and 18mph, the road capacity shrinks dramatically between the two speeds.
Finally, you get vastly different places at 40 mph vs 20mph. At 20, roads are smaller, people can safely exist close to the roadway and even enjoy themselves, and you don't need huge buffer zones for the safety of drivers or people. All these things compound to put people (willingly) in closer proximity to one another, so that, while peak travel speed is lower, traffic throughput stays relatively consistent, and travel times decrease overall because many long trips get replaced with short ones.
a better solution is narrowing lanes (to 9-10 ft), and possibly installing bollards everywhere, because that internalizes the costs of collision (car gets wrecked and you get hurt in addition to pedestrians), so drivers naturally self-regulate driving behavior for safety (rather than the secondary measure, speed). you also don't need an external police force and it's attendant costs, both financially and societally, for enforcement.
I remember when Volvo introduced IntelliSafe technology few years ago that car was totally "paranoid" and it was beeping all the time -> most of drivers deactivated that system.
It's an important test case, but I wonder how many of those would be undetectable by a human as well.
For example this camera module will be used soon in cars and it's really more sensitive than driver's eye : http://www.camera-module.com/download/sony-imx390-sensor-sel...
Isn't this an issue with lights ?
Seems unlike Tesla to be out-classed like this. Six other models had significantly better speed reduction or didn't hit the pedestrian at all.
https://www.iihs.org/news/detail/performance-of-pedestrian-c...
They did test it on autopilot though, right? It says "standard" on Model 3. AFAIK autopilot features are not standard, it's an option you have to buy on Tesla. I also can't find anywhere in the report whether the car was actually driving on autopilot or not. All of these details I think make a big difference. A standard non-autopilot-equipped model 3 might just be subpar to other cars, it would not surprise me.
How is easy: it doesn't cost anything, and makes them profit.
It's like how the had the gal to nam their system "Autopilot" when it's not, and full awareness is required from the driver in the small print...
Now the current software does very well on limited access roads; highways and interstates; and has for over a year that I have owned the car. It does fine on two lane roads but the use cases there are far more limited and mostly to showing off for friends. Well that and doing stuff you normally would wait till your stopped to do.
I am not sure if this result merits the use of the word "aced" in the title.
Like, compare a pedestrian collision where the car has a lower and more aerodynamic front vs the wall that is a SUV's front.
https://www.aarp.org/auto/driver-safety/info-2018/suv-pedest...
https://www.adac.de/infotestrat/tests/assistenzsysteme/fussg...
Audi A4 has single monochrome camera (+well tuned image recognition HW/SW) and Eyesight system from Subaru has two cameras and it's already used for ~5 years.
They can achieve a huge safety improvement by forcing speed limit. But somehow car manufacturers don’t want to implement it.
I've had multiple cars that show the current speed limit on the dash. Some based on GPS, others based on visual recognition. None of them have been correct 100% of the time. I wouldn't want my car to slow me down on a highway because it misinterprets a sign or because their data isn't up-to-date, or because the GPS is glitching and thinks I'm driving on a side road.
It's a really simple solution in theory, but in practice it doesn't seem feasible yet.
Maybe because nobody would buy a car that enforces its idea of the current speed limit on the driver? (It'd be good to have as an option though, I agree, as long as it can be overridden.)
So what's "good enough"? Even if these systems don't prevent all collisions they'll often vastly reduce the speeds at which they happen.
Anyone care to have a guess why?
People suck.
That being said I would probably lose my temper as well when faced with such a situation.
I guess if I wore a 2-ton suit of power armor I'd just be pissed off instead :)
I think it's a great thing that the car prioritizes pedestrian safety, but it's very unfortunate that people would abuse this.
I assure you, I'm annoyed by many other things too.
>Cars are the leading cause of dead children
You know, this obviously is exactly why it annoys me to turn off the pedestrian detection. It's not like it protects me, sitting in my car.
I totally agree with you on this, I was just observing an unfortunate byproduct of an otherwise great system.
>Asking such a system to distinguish pretend behavior seems like a big ask.
I agree, I'm certainly not demanding that anyone do anything to "solve" this issue.
But hey, thanks for reminding me to buy a dashcam.
Imagine when someone realised you can slam on the brakes in front of X brand of car and it prioritises avoiding the car in front over all else
I live in an extremely busy city full of scooters (of all kinds!) and drunk pedestrians, it's not possible to get far here without extreme care.