"Orienteer" wrote in message
...
"Dave" wrote in message
...

Different coloured arrows for different areas of London.

Red in the north (on the northern end of the Piccadilly line at least);
yellow in the centre. I'm sure someone else will tell you the colours
used elsewhere.

Purpose? An easy way to spot people who have
crossed Z1 'illegally', I guess.

Illegally indeed (no quotes needed).

There are plenty of ways to 'cross' London without going through
zone 1 on the tube: buses, N London line, S London trains.

Yes, but revenue staff can ask you how you got there, and you'd better have
your story straight. I suppose that if you do it habitually you are likely
to get followed.

--
John Rowland - Spamtrapped
Transport Plans for the London Area, updated 2001
http://www.geocities.com/Athens/Acro...69/tpftla.html
A man's vehicle is a symbol of his manhood.
That's why my vehicle's the Piccadilly Line -
It's the size of a county and it comes every two and a half minutes