those LO3x's belong to 97, for possible use on 97e. see the same
thing on the O.405's on 97? there u go.
310G is a bus specially reserved for museum charters. thus, though
it has ez-link card reader, it has no standing pax as it is
impratical and dangerous for school kids to stand at the area
instead of providing seats for all of them.
i suppose u saw 310G in action for the NDP right? i also spotted
the bus on NDP charters myself last saturday, doing shuttles for
Ang Mo Kio ITE.