In Sweden the traffic lights make different ticking sounds depending on what state they are in. The traffic lights have three states: red, green and blinking gr

In Sweden the traffic lights make different ticking sounds depending on what state they are in. The traffic lights have three states: red, green and blinking green which means that it'll soon turn red again. Super handy for us seeing too since you don't have to watch the light to know when it's changed. There's a sound clip on Wikipedia in which you can hear two of the states: http://upload.wikimedia.org/wikipedia/commons/a/a0/LA2_dont_walk.ogg http://upload.wikimedia.org/wikipedia/commons/a/a0/LA2_dont_...