Supporting more than 3.5 billion passengers annually , Tokyo has been blessed with the title of the world ’ s most extensive urban rail network . The railway serves around 80 % of the working population who travel to and around the city — where the majority of jobs are situated .

While a very punctual service , Tokyo ’ s public transport network is prone to delays during rush hour , though the use of overhead power supplies makes the city far less dependent on automobiles and other fossil-fuel-powered vehicles .