Hey Veil thanks for your response, but I think you may have misread my post. All roads that have a red light have "painted white lines that at the intersection. These are just regular painted stripes about a foot wide. this is where you stop at a light.
A court case I heard about was argued (successfully) that if a car is past that line it physically is impossible for that car to stop at a point that it has already passed. Pa DMV says that a car must stop at the white line at a red light. If you are driving and the light is yellow and you go fully past the line and the light turns red in the intersection. You are already past the point the guide says you are to stop. maybe by 1-2 car lengths.
The post was not about trigger strips on the road. I apoogize if my wording led you astray on that.