5 ms·
Eventually, I expect we'll have some national standard for wireless transmitters on traffic signals, so they can send a message (timestamped and cryptographical
by elihu 10y ago
Eventually, I expect we'll have some national standard for wireless transmitters on traffic signals, so they can send a message (timestamped and cryptographically signed with the state's department of transportation's public key) to the cars to tell them unambiguously when to stop and when it's safe to go.
(This could help human drivers too; just add a red/yellow/green light to the car dashboard for those times when you can't see the actual light because there's a big truck in the way, or the sun is directly behind the traffic signal.)
I also expect that by the time this sees near-universal adoption, we'll already have the image recognition corner cases mostly worked out.
- greeneggs 10y agoLas Vegas has some communication from traffic signals to vehicles [1]. I can't tell from the article how it is implemented; it might just be that the city's traffic control computer sends traffic light information out, instead of individual lights communicating. [1] http://www.theverge.com/2016/12/12/13923254/audi-v2i-las-vegas-test-drive-traffic-signals http://www.theverge.com/2016/12/12/13923254/audi-v2i-las-veg...
- GordonS 10y agoA nitpick, but you would sign with the private key, and verify with the public key.
- elihu 10y agoThanks, that's what I meant.
- autotypo 10y agoHow about "Signal Ahead" light boards on the back of semi trailers, which relay the traffic signal to the cars behind. Like Flashing Rear End Devices on trains, which operate by telemetry and function as red signals. Ought to be maintenance free and a nice way for the big trucking lines to differentiate their public face - similar to those aero ground effects that are showing up on trailers.