That's already a thing, though it isn't AI driven. Many intersections have sensors that detect traffic and can change the lights quickly or let them stay green longer if you're approaching it. It's only getting more advanced as time goes on.

https://youtu.be/pTR3Cn5DnHY?si=nXtqHqVMsw47FmQZ

https://youtu.be/P_EmAKRrlBc?si=McCO_tE43FaPkRL9

Doesn't need AI, and there are countries that already have a system in place with the same result. Unsurprisingly the places with more focus on pedestrian, cyclist, and public transit infrastructure have the most enjoyable driving experience. All the people that don't want to drive will stop as soon as it is safe and convenient, and all those cars off the road also help with this because the lights will be queued up with fewer cars.

To be fair, there are already more intelligent traffic light systems that use sensors in the road to see if there is traffic sitting at the lights, combined with push buttons for pedestrians and cyclists. These can be combined with sensors further up the road to see if more traffic is coming and extend the periods of green light for certain sides. It may not be perfect and it may require touching up later after seeing which times could be extended or shortened. It's not AI but it works a lot better than the old hard coded traffic lights. Here in the Netherlands there are only a handfull of intersections left that still have the hard coded traffic lights.

That’s been a thing for decades already in a lot of places.

You and Sarah Radz and everyone else here with brilliant practical ideas need to submit your resumes to the Silicon-Valley-esque corporations that comandeer such industries, be hired on as brains.

There is another solution: not use car