3 ms·
I'm not sure radar would help - the pillar is a stationary object, and car based radar tends to drop all returns at the same rate as the car is moving forward.
by Syonyk 5y ago
I'm not sure radar would help - the pillar is a stationary object, and car based radar tends to drop all returns at the same rate as the car is moving forward. Radar isn't terribly precise, so you end up with tons of returns off signs, bridge abutments, etc.
Remember, with radar, Teslas will happily autopilot themselves into a semi truck across the road, stopped fire trucks, concrete road barriers, etc. I see no reason to believe that a stationary concrete pillar in the middle of the road would be avoided any better with radar than without.
- moralestapia 5y agoHere's what happened another time someone argued that "radar can't detect stationary objects". https://news.ycombinator.com/item?id=16722461 https://news.ycombinator.com/item?id=16722461 Radar does detect stationary objects, come on.
- Syonyk 5y agoYes, radar can easily detect stationary objects. Tesla's implementation of their radar processing drops all returns from anything stationary, given the forward speed of the car. In the context of a Tesla thread, I didn't think that needed to be specifically stated, but will do so in the future.
- mcguire 5y agoBecause, clearly, anything stationary is ground clutter that can be ignored.
- moralestapia 5y agoParticularly if you're traveling towards it at 60 mph.
- aeternum 5y agoA big problem with radar was the resolution. The radar signature of a highway overpass looks extremely similar to the monorail column. Emergency breaking on a highway when going under an overpass is also a huge problem, so radar may not be the answer.