Traffic light sequence

1

Traffic light sequence
Red light on
2
Traffic light sequence
Red light on Amber light on
3
Traffic light sequence
Red light on Amber light on Red and amber lights
off Green light on
4
Traffic light sequence
Red light on Amber light on Red and amber lights
off Green light on Green light off Amber light on
5
Traffic light sequence
Red light on Amber light on Red and amber lights
off Green light on Green light off Amber light
on Amber light off Red light on