My idea is to use a smaller Pole type design with a camera mounted inside the top of it. And a red and green light with sensors on the corresponding parts of the road that are being affected. This would allow places like one lane highways to not get backed up by people trying to rush past and practically running into the back of you. It would see the vehicle looking to make a turn and would change the signal for the person coming the opposite way to stop for one moment and that the person make the turn. This simple courtesy what do you lie about accidents to be reduced from people using unnecessary road rage!