I have been campaigning for over 8 years to have the bus rapid transit concept investigated in Christchurch by Environment Canterbury and Council. While Auckland and Wellington might have a case for rail (based on size, for Auckland; and on geographic footprint, Wellington) it is just a non-starter in Christchurch.
If we take the outermost half of the population in Christchurch, they don't live up long narrow corridors, as in greater Wellington but in a collar of outer suburbs. Nor is the distance huge, even Rangiora is close. This footprint suits having five or six bus rapid transit corridor trunks, each branching out into conventional doorstep bus routes to two or three terminii. Instead of one hugely expensive rail or light rail system, in effect this system offers peak time very fast (non-stop) direct runs into the city from about 15 different outer routes areas. The key is creating not just bus priority traffic lights and on-street bus lanes, but also link corridors, green boulevards cut between existing streets by removing several houses, to give buses uncontestable advantage over cars in rapid access.
Tags: bus rapid transit, buses, light rail, public transport, trains, transit