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This is exactly how Elon described the system. Forward looking radar now bounces radar under car in front, getting back location of 2nd car in front, and respon

This is exactly how Elon described the system. Forward looking radar now bounces radar under car in front, getting back location of 2nd car in front, and responding to sudden braking etc.

OliverJones 10y ago
Exactly so. The Tesla Model S dashboard display shows the car in front, and the car in front of that. The little car cartoon goes blue when that car is controlling the speed of the Tesla, and red when that car is causing an emergency stop. I've seen this happen, thankfully without the crash and rollover, in my car (Model S). My car has stopped when the second car in front decelerated fast. This kind of forward-looking speed control can also contribute to the melting of compression wave traffic jams. Radar's a tough signal processing deal: a soda can on the road can mimic a large vehicle. Possible next step in systemic forward-looking safety control, and much cheaper than radar: a few bits of data embedded in stoplights could announce the state of the stoplights of the next car forward (and even the one in front of that). Stoplights are all LEDs now, and they're bright enough to be seen by a really cheap camera even through mist on the glass.
- matheweis 10y ago
  > a soda can on the road can mimic a large vehicle. This might not be a bad thing... in my early twenties I saw what I thought was a paper cup in the road and ignored it. When I hit it, my car felt like it was thrown up in the air - turned out to be someone's starter motor. I ended up with a cracked wheel rim and a flat tire.
- notatoad 10y ago
  When you say stoplights, do you mean brake lights? Brake lights are on the rear of a car, stoplights control an intersection.
  - OliverJones 10y ago
    Yes, brake lights on the vehicles. I regret the confusion.
Havoc 10y ago
> Forward looking radar now bounces radar under car in front, getting back location of 2nd car in front, and responding to sudden braking etc. wow - didn't realise this is a thing. Colour me impressed.
agumonkey 10y ago
link in case https://youtu.be/cG3Jp5GyPoc https://youtu.be/cG3Jp5GyPoc the system is indeed very interesting, and even the presentation is clear and useful. Serious kudos to everybody at Tesla.

This is exactly how Elon described the system. Forward looking radar now bounces radar under car in front, getting back location of 2nd car in front, and responding to sudden braking etc.

OliverJones 10y ago

Exactly so. The Tesla Model S dashboard display shows the car in front, and the car in front of that. The little car cartoon goes blue when that car is controlling the speed of the Tesla, and red when that car is causing an emergency stop. I've seen this happen, thankfully without the crash and rollover, in my car (Model S). My car has stopped when the second car in front decelerated fast. This kind of forward-looking speed control can also contribute to the melting of compression wave traffic jams. Radar's a tough signal processing deal: a soda can on the road can mimic a large vehicle. Possible next step in systemic forward-looking safety control, and much cheaper than radar: a few bits of data embedded in stoplights could announce the state of the stoplights of the next car forward (and even the one in front of that). Stoplights are all LEDs now, and they're bright enough to be seen by a really cheap camera even through mist on the glass.

matheweis 10y ago
> a soda can on the road can mimic a large vehicle. This might not be a bad thing... in my early twenties I saw what I thought was a paper cup in the road and ignored it. When I hit it, my car felt like it was thrown up in the air - turned out to be someone's starter motor. I ended up with a cracked wheel rim and a flat tire.
notatoad 10y ago
When you say stoplights, do you mean brake lights? Brake lights are on the rear of a car, stoplights control an intersection.
- OliverJones 10y ago
  Yes, brake lights on the vehicles. I regret the confusion.

Havoc 10y ago

> Forward looking radar now bounces radar under car in front, getting back location of 2nd car in front, and responding to sudden braking etc. wow - didn't realise this is a thing. Colour me impressed.

agumonkey 10y ago

link in case https://youtu.be/cG3Jp5GyPoc https://youtu.be/cG3Jp5GyPoc the system is indeed very interesting, and even the presentation is clear and useful. Serious kudos to everybody at Tesla.