Peter Smyth wrote:
"Dave Arquati" wrote in message
...

Dan Gravell wrote:

wrote:


I'd advocate six, but I think 8 is unrealistic - major stations aside
(East Croydon, Wimbledon etc) how many routes have 8tph?

Put simply - build them. You're right that few have 8tph, but the setting
of the waterline at four seems more a decision based on marketing than it
does the semantics of the word "frequent".

I think a 15 minute interval is just enough to qualify - after all, given
that the average wait should be 7.5mins, that's just enough time at the
big terminals to buy a ticket and find the platform if you're unfamilar
with the place.

4tph is also the off-peak frequency to London at Richmond, Ealing Broadway
(District) and Rickmansworth outwards. I accept that that's a small
proportion of stations.


Richmond and Ealing Broadway both have 6tph off-peak. Rickmansworth -
Amersham has 6tph if you include the Chilterns. The only stations of LU with
less than 6tph are Chesham (2tph), Woodford-Hainault (3tph), Kensington
Olympia and Mill Hill East (4tph), New Cross and New Cross Gate (5tph each).

My apologies about Richmond and Ealing - I didn't check beforehand. But
Rickmansworth only has 4tph direct to central London between 10am and
3pm weekdays, including the Chilterns - Met departures are at xx00 and
xx30, Chilterns at xx10 and xx40.


--
Dave Arquati
Imperial College, SW7
www.alwaystouchout.com - Transport projects in London