Post by max on Sept 15, 2009 17:02:46 GMT
Zones have vanished from the Underground Map for now, but given public opinion I suspect that they will be back, but when they do return, there is going to be some problems in showing them. These all stem from the rule that if your journey changes zone, you are charged the higher fare, even if you are returning to the same zone as you started.
The first problem is subtle, with through CJ to NLL services, and Willsden Junction as a border station, how can the correct zones be shown? Uniquely, just before WJ, NLL trains are technically in Zone 3, but WLL trains are technically in Zone 2, even though they are on the same tracks (I think). This is necessary so that Acton Central to Harlesden is charged as a single zone fare, likewise Shepherd's Bush to Kensal Rise, but its going to be nasty to show on the map. Technically, the tracks from Acton Central to Willesden Junction must go through zone 2, because in reality they are between East Acton and North Acton, and North Acton is on the zone boundary. The people who like their lines to cross in the 'correct' places must hate that one.
The second problem will stem from Shoreditch moving to zone 1, but a special fare available for people who don't get off there. That one is going to need yet another warning of some sort on the map,
The first problem is subtle, with through CJ to NLL services, and Willsden Junction as a border station, how can the correct zones be shown? Uniquely, just before WJ, NLL trains are technically in Zone 3, but WLL trains are technically in Zone 2, even though they are on the same tracks (I think). This is necessary so that Acton Central to Harlesden is charged as a single zone fare, likewise Shepherd's Bush to Kensal Rise, but its going to be nasty to show on the map. Technically, the tracks from Acton Central to Willesden Junction must go through zone 2, because in reality they are between East Acton and North Acton, and North Acton is on the zone boundary. The people who like their lines to cross in the 'correct' places must hate that one.
The second problem will stem from Shoreditch moving to zone 1, but a special fare available for people who don't get off there. That one is going to need yet another warning of some sort on the map,
