[draz]

It's probably a reason to continue maintaining a distinct position for each color in the traffic light.

[iamatworknow]

There's one stretch of road in southern Quebec that has horizontal traffic lights that always throw me for a loop, despite not being colorblind. They flash in odd (to me) patterns and have two red lights: http://i.imgur.com/i7jCi.jpg

[tjohns]

Two red lights... which are also square (other lights are still round). It's actually a pretty good design.

[iamatworknow]

I'm good with the layout, but if I remember correctly the turn arrows flash in the middle while the outer red lights are still lit. So if I've got the green light to turn left, it's flashing in between two red lights, which I think is what made me kind of wary.

[twobyfour]

But how do you determine the position at night?