5 ms·

Not just that, it seems to imply that Uber either aren't maintaining the vehicles correctly, or that their modifications are rendering them unsafe on the road.

Not just that, it seems to imply that Uber either aren't maintaining the vehicles correctly, or that their modifications are rendering them unsafe on the road. The Volvo XC90 is an exceedingly safe car already. With the LED lighting, it shouldn't be possible for the headlamps to illuminate that poorly - it's as if the auto-levelling circuitry thinks the car is riding nose-up. The XC90 also comes with a factory auto-brake that is supposed to prevent the vehicle from having this type of accident - their stated goal is zero fatalities. Did Uber not buy models with this included, or did they de-activate this feature? You'd think an independent system like that would actually be seen as a positive feature...

TrickyRick 9y ago
Isn't the auto brake only active at lower speeds? (<50 km/h is a figure that rings a bell). The car was driving 61 km/h which is higher than normal "city speeds".
- gambiting 9y ago
  I don't know about that specific model of Volvo, but the emergency brake works up to much higher speeds in other cars/brands - it's just that above 50km/h it's not guaranteed to slow down to zero or prevent impact, just reduce the speed. I suspect that system was disabled as it would interfere with whatever driving tech tech have though.
  - TrickyRick 9y ago
    In Volvos case the system is called City Safety and is only active up to 50 km/h (https://en.m.wikipedia.org/wiki/City_safety https://en.m.wikipedia.org/wiki/City_safety) However there might be other systems which break automatically for cars, in the case of a sudden traffic jam for instance.
avs733 9y ago
Or did they put a couple hundred kilos of computing and sensing equipment and batteries into the car and change the weight distribution such that the headlights now point up? Or did they darken the video?
- ProblemFactory 9y ago
  Three people in the back seat is a couple hundred kilos. Modern cars, including the XC90 have a tilt sensor to adjust the headlights automatically for this.
  - avs733 9y ago
    three people in the back seat are in front of the rear wheels/basically over the rear suspension. Its a different moment arm to have it in the trunk or on the roof. Source: I teach statics
    - snovv_crash 9y ago
      If you taught Dynamics you would know that the compression of the rear springs caused by most of the weight being over the back wheels would make the lights point higher.
- panarky 9y ago
  > Or did they darken the video? Does anyone trust Uber to provide all the evidence they have, and not just selectively release bits that support them? Does anyone trust Uber not to alter the video, say by increasing the contrast to make darker objects invisible?

TrickyRick 9y ago

Isn't the auto brake only active at lower speeds? (<50 km/h is a figure that rings a bell). The car was driving 61 km/h which is higher than normal "city speeds".

gambiting 9y ago
I don't know about that specific model of Volvo, but the emergency brake works up to much higher speeds in other cars/brands - it's just that above 50km/h it's not guaranteed to slow down to zero or prevent impact, just reduce the speed. I suspect that system was disabled as it would interfere with whatever driving tech tech have though.
- TrickyRick 9y ago
  In Volvos case the system is called City Safety and is only active up to 50 km/h (https://en.m.wikipedia.org/wiki/City_safety https://en.m.wikipedia.org/wiki/City_safety) However there might be other systems which break automatically for cars, in the case of a sudden traffic jam for instance.

avs733 9y ago

Or did they put a couple hundred kilos of computing and sensing equipment and batteries into the car and change the weight distribution such that the headlights now point up? Or did they darken the video?

ProblemFactory 9y ago
Three people in the back seat is a couple hundred kilos. Modern cars, including the XC90 have a tilt sensor to adjust the headlights automatically for this.
- avs733 9y ago
  three people in the back seat are in front of the rear wheels/basically over the rear suspension. Its a different moment arm to have it in the trunk or on the roof. Source: I teach statics
  - snovv_crash 9y ago
    If you taught Dynamics you would know that the compression of the rear springs caused by most of the weight being over the back wheels would make the lights point higher.
panarky 9y ago
> Or did they darken the video? Does anyone trust Uber to provide all the evidence they have, and not just selectively release bits that support them? Does anyone trust Uber not to alter the video, say by increasing the contrast to make darker objects invisible?