r/Glasgow Tools

[Pelican](https://en.wikipedia.org/wiki/Pelican_crossing) and [Puffin](https://en.wikipedia.org/wiki/Puffin_crossing) Crossings, that cross over a single road, will not turn red unless the button is pressed. That's what they're there for. [Like this bit in Partick](https://www.google.com/maps/@55.8708458,-4.3025725,3a,75y,103.89h,95.07t/data=!3m6!1e1!3m4!1s-3G_5rjv7v8dmVvWBykV_g!2e0!7i16384!8i8192)

At a Junction, it depends on the way the traffic goes.

If it's a series of one-way streets (such as in town) then the green man will come up whenever the street your crossing has automatically gone red. It won't be automatic if more than one street can turn into the crossing.

Take, for example, the junction of [St Vincent St and Wellington St](https://www.google.com/maps/@55.861955,-4.2597232,20z)

Two one-way streets intersect like this:

1| V |2
-- V --
<<< <<<
-- V --
3| V |4

The pedestrian signals from Corner 1 to Corner 2, and from Corner 2 to Corner 4 will automatically turn green when traffic is stopped, during the normal cycle of the lights, to allow the traffic on the other street to go.

The lights from Corner 1 to 3 and from 3 to 4 will never go green unless you press the button because, in the ordinary course of the traffics cycle, one road of traffic will always be at green and they can both turn into it.

The signals only queue both streets to stop when the button is pressed.

Now, take this bit of [Charing Cross](https://www.google.com/maps/@55.8663828,-4.2718748,53m/data=!3m1!1e3). Pedestrians are not allowed to cross at points where traffic can turn into it from two directions (due to the way the one-way system and islands are designed).

At this intersection (and a few other bits of Charing Cross) the buttons do *absolutely* nothing.