I.on [美 ɑn, ɔn, 英 ɒn]介词on often appears as the second element of certain verb structures in English (count on, lay on, sign on, etc). For translations, see the relevant verb entry (count, lay, sign, etc).
To facilitate traffic it was decided that the colectivo bus lines travelled on these feeder roads, except the express service buses, which stop on these feeders.