Red LIght, Red Light

We used to play a game called red light, green light and yes that was back in the day when I played with baby dinosaurs. I think of that game often as I am driving to church. I have 5 signal lights to go through. 6 days of the week, I can expect to hit at least half of them green. So why is it that on Sundays with less traffic, the lights are all almost always red? Of course it is compounded when I am already running late for church. On those days I would just guarantee 5 red lights. Today I was not running late but why did the light have to turn red when there was absolutely nobody going the cross direction and the light was green until it saw me coming? Our lights are supposed to be rigged according to the traffic. I guess my car has a red light detector on it.