971E has no parent route, so how is it a FFW
route?
Anyway, 511, 512 & 520 were peak-hour routes before their
eventual withdrawal.
971E under SMRT is considered an express svc, though the
numbering is strange because express svcs with 'E' like 963E are
based on a parent service while 868 with no parent service is
assigned a totally different number. Wonder what they'll call the
other new express svcs coming in 2013 to Yishun and CCK.
Actually Fast Forward is just SBST branding, and is also
considered 'Express' service in terms of the fares. SMRT just lumps
them all together as Express services, regardless whether there is
a parent route.