or someone who comes from your front mau turn left? so I guess you're right in the scenario that one direction has a green light with no green arrow and the op

or someone who comes from your front mau turn left? so I guess you're right in the scenario that one direction has a green light with no green arrow and the opposite direction has a red light, but how often does that scenario exist? If both directions have a green light, left-turners yield to right-turners because of traffic behind the right-turners and stop signs are always turn based.