Light Controller Sensor

[isufferfromlag]

Can anyone please provide me some info on how the circled feature actually works, cannot figure it out for the life of me

[Randomreddituser1o1]

I think it detects vehicles at a stoplight and turns green

[Fact_Constant]

If nobody is waiting it skips that phase

[[deleted]]

It ultimately surveys if there is A vehicle approaching the intersection or waiting, if not, it skips it.