Don't mean to derail the thread, but with regards to the five-pod traffic light, perhaps it's like they are here in Alberta:
Top two are solid red and always light up together ... not sure why, maybe a "double hint" to people to stop.
Third one down is solid amber, like the middle one is on three-pod lights.
Fourth one down is a two-color arrow (LEDs), green when it needs to be and amber when it needs to be as well, for directional advance turns.
Last one down is solid green, like the bottom one on three-pod lights.
Anyway, carry on...