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nothing new there
Actually there is something new. The speed is confirmed at 74 mph.nothing new there
Also, the detailed report says the vehicle's HV battery disconnected at point of impact, which meant the car coasted into the pole. An earlier eyewitness claimed the car continued to maintain its speed after the collision as if Autopilot didn't disengage.Actually I think there is... Right off the bat: "The report states that according to system performance data downloaded from the car, the indicated vehicle speed was 74 mph just prior to impact, and the posted speed limit was 65 mph."
Good catch. That is important too since it shows the safety systems did detect the crash and autopilot definitely wasn't engaged anymore after the initial impact.Also, the detailed report says the vehicle's HV battery disconnected at point of impact, which meant the car coasted into the pole. An earlier eyewitness claimed the car continued to maintain its speed after the collision as if Autopilot didn't disengage.
Also, the detailed report says the vehicle's HV battery disconnected at point of impact, which meant the car coasted into the pole. An earlier eyewitness claimed the car continued to maintain its speed after the collision as if Autopilot didn't disengage.
Good catch. That is important too since it shows the safety systems did detect the crash and autopilot definitely wasn't engaged anymore after the initial impact.
From the description, the initial impact was not that severe (energy wise), which is why the car was able to coast so far.
I would be curious as to how many accidents occur while cruise control, on any car, is engaged. Seems to me, blaming so-called "Auto Pilot" is inaccurate. Cruise control + distracted driver + exceeding speed limit + truck driver error ought to pretty much sum it up. Auto Pilot is being villified incorrectly, IMHO.
I would be curious as to how many accidents occur while cruise control, on any car, is engaged. Seems to me, blaming so-called "Auto Pilot" is inaccurate. Cruise control + distracted driver + exceeding speed limit + truck driver error ought to pretty much sum it up. Auto Pilot is being villified incorrectly, IMHO.
Maybe it's difficult to discern, but if AEB had applied braking...what speed would it have reduced the Model S before impact?
Seems to me, looking at the damage to the trailer, that even moderate speed (~35mph) would still have made for a pretty bad day.
I thought I read somewhere (perhaps in the Manual's PDF) that AEB will only reduce speed by a maximum of 20 mph.
Automatic Emergency Braking
-- "When Automatic Emergency Braking has reduced the driving speed by 25 mph, the brakes are released. For example, if Automatic Emergency Braking applies braking when driving at 56 mph, it releases the brakes when the speed has been reduced to 31 mph" --> this implies that emergency braking will not necessarily bring the car to a complete stop by itself, but rather applies the brakes to reduce the impact of an unavoidable collision
Except that at the lower speed, the truck would have moved further forward, and he might have hit the rear axles instead of being decapitated. That would be totally survivable (in a Tesla...).Found this:
Updated Owner's Manual - Interesting Information | Tesla Motors
Sounds like the Model S would have hit the truck at 49mph, had AEB engaged. At 49 mph, I don't think AEB would have changed the outcome. And based on where it went under the truck, the half a second of distance the trailer would have moved laterally wouldn't have changed the outcome either.
So, short of the driver seeing the truck...it doesn't seem the result could have been any different: even in the best case scenario.
Except that at the lower speed, the truck would have moved further forward, and he might have hit the rear axles instead of being decapitated. That would be totally survivable (in a Tesla...).
Except that at the lower speed, the truck would have moved further forward, and he might have hit the rear axles instead of being decapitated. That would be totally survivable (in a Tesla...).
He hit nearly dead center, and the semi wasn't moving very fast...maybe someone can calculate it...but AEB would have to engage pretty early to make a difference.