It's on almost every street but did you even know that there is an extra button?
So where is it and what's it for?
You know the box where you press the button to activate the green man? It's a small plastic or metal cone that's on the underside of that - where some people have nicely put their chewing gum. When the green man lights up and its your turn to cross, it starts spinning.
What the chuff!
It's for people who can't see the green light - or even the traffic!
Not all crossings beep for blind people - some of them don't do that especially in busy places where there are lots of crossings and they could get mixed up about which crossing is beeping and walk into incoming traffic.
And, of course, there are some people who are deaf/blind.
Hugh Huddy, who is partially blind, told the BBC: "An important point to make is that I wait for the cone to rotate but combine the information that it gives me with listening to the traffic on the road in front of me. You can hear whether they're changing gear or slowing down.
"The cone isn't telling you it's safe to cross, it's telling you the light is on. For instance, cyclists like whizzing through crossings sometimes, even though they shouldn't."
Cyclists should be extra careful - not just of vehicle's blind spots but also of blind people!
But not all crossings have cones - it's up to the local authority to decide if it wants them.
The company that makes the cones, Radix, has sold around 10,000 units a year since 1995 - they first started appearing on the streets in 1989.
So the next time you're about to cross the road - take a look under the box and see if there is a spinning cone.
Blowing Your Mind
There are a lot of things we don't even realise about our day-to-day lives. Did you know that the stickers on fruit are edible? For years I've been peeling them off my Granny Smith's but apparently the sticker and the glue are both totally OK to eat. So go ahead and eat them! Or maybe not, it still feels a bit weird to eat a sticker.
Featured Image Credit: PA