New buses offer swift, clean transit

Drivers wear clean shirts, ties and neatly pressed trousers and politely greet passengers

Sweaty passengers crammed into battered buses and stuck in traffic jams look on enviously as Tanzania's shiny new commuter buses fly by on the pristine asphalt of dedicated highway lanes.

In Dar es Salaam, the East African country's biggest city of 5 million people, rush hour has always meant chaos, until now.