>>56082Why trams, you ask? For the passenger the level of service is one; the rigid infrastructure is easily made smooth, being quite comfortable to the tram passengers. Due to ease of segregation trams may use shortcuts buses for various reason, main one of them other traffic, cannot. Traffic lights can be easily adjusted to give priority as trams approach them less frequently than trunk buses do. This with the convenient stop locations makes for really quick and easy travel.
Another boon for urban areas, i.e. cities, is that trams can be made big to move a whole lot of those passengers at once without sacrificing that already superior comfort: less vehicles are needed to cope with increasing demand. It's also ecological and economical! Electricity can be produced on the cheap efficiently in big plants and the vehicles last up to a hundred years by current experience, usually though up to twenty or forty. Trams also stress the street pavement much less than buses do, offsetting for the additional track maintenance.