I think coaches refers to longer distance bus-travel… like greyhounds in the US.
The reason regular bus travel is so bad in that graphic is that it is counted per passenger and these inner-city buses drive a lot of the time with few passengers. But if you want to keep servicing out-laying districts and non-rush hours there is little to do about that (although often these buses are over-sized).
I think coaches refers to longer distance bus-travel… like greyhounds in the US.
The reason regular bus travel is so bad in that graphic is that it is counted per passenger and these inner-city buses drive a lot of the time with few passengers. But if you want to keep servicing out-laying districts and non-rush hours there is little to do about that (although often these buses are over-sized).