the 8 citéis are proximity lines, which connect districts of the same city. citéis 42, 45 and 46 circulate in loop with double direction, with only one terminus. citéis 47 "the electric shuttle" crosses the small streets of the downtown area : it doesn't have any precise stop, the bus stops only when passengers request. they have a frequency of 20 to 60 minutes. they function from 6:30 am to 8 pm.