the updated "London Rail and Tube services map" (with the Overground changes) now shows the additional Oyster PAYG validity. I'm a bit surprised- I'd been led to believe all the additional stations would be in Watford/Greys style "special" zones, but Theobalds Grove and Waltham Cross join Zone 7 with Chesunt in Zone 8. Broxbourne though goes into the "special" zone. Brentwood and Shenfield are "special" too.
I take it the decision on which zone to apply is rather "political"- as with Watford, it seems a bit silly that Broxbourne isn't in Zone 9. If it was purely a distance thing, using the traditional centre of London (Charing Cross) Zone 9 at Chesham is 40km from the centre. Hertford East is only 32.5km- Bishops Stortford, where the weekday trains the serve Lee Valley stations (on the Stratford service) terminate, is 44km. Broxbourne is at 27km- Epping, in Zone 6, is 26.4km. Shenfield is 34.5km.
(Dartford, within the M25, is 24.7km. Basildon is at 40.8km, a few hundred metres further than Chesham. Gatwick Airport is 39.3km)
I take it the decision on which zone to apply is rather "political"- as with Watford, it seems a bit silly that Broxbourne isn't in Zone 9. If it was purely a distance thing, using the traditional centre of London (Charing Cross) Zone 9 at Chesham is 40km from the centre. Hertford East is only 32.5km- Bishops Stortford, where the weekday trains the serve Lee Valley stations (on the Stratford service) terminate, is 44km. Broxbourne is at 27km- Epping, in Zone 6, is 26.4km. Shenfield is 34.5km.
(Dartford, within the M25, is 24.7km. Basildon is at 40.8km, a few hundred metres further than Chesham. Gatwick Airport is 39.3km)
