[snakeyjake]

My employer makes a multi-band synthetic aperture radar that penetrate snow and is high-resolution enough to "see" painted road markings and reflectors beneath a layer of snow.

It is nowhere near small or cheap enough for self-driving car applications, but will be one day.

Another challenge is affordable real-time processing of the data. Churning through 3,200MB/s of phase-history data is expensive but again that will solve itself given time.

[mrweasel]

That is pretty neat, but what about the road with no markings? None of the road leading into the town where I live have road marking or reflectors or are you able to target the reflectors on posts by the side of the road as well? I mean see through the snow on those.

[ChatGTP]

Snow clearers always destroy road markers. Every summer where I live they have to be repainted. So this would suck.

Honestly, why don’t we just install magnetic or some other type of “tracks” in roads to help cars work like trains ?