All tickets purchased outside Z1 have the triangles.
Blue,yellow,green red. For North, south, east and west issuing.
Cant remember which area is what colour. Havent checked a ticket for a
while!!


"Dave Liney" wrote in message
. ..

"Malcolm & Nika" wrote in message
...

They are solely checking for people who travel through zone 1 without a
zone 1 ticket. This is marked on the ticket with the nice colour
triangles

What colours are used? And how large are the triangles? I've always had
seasons that include zone 1 so I've not seen them.

Dave