Here's a link to some traffic light systems that you can trust most of the time. But nothing is perfect, so you're still required to pay attention yourself too,

Here's a link to some traffic light systems that you can trust most of the time. But nothing is perfect, so you're still required to pay attention yourself too, of course. https://www.youtube.com/watch?v=knbVWXzL4-4 https://www.youtube.com/watch?v=knbVWXzL4-4