While metro or subway systems work well in cities with populations that number in the millions, tramways succeed best in cities that have populations of half a million or less, claims one Italian environmentalist.
Samal ajal kui metrood on omal kohal linnades, kus elanike arv miljonitesse ulatub, on kuni poolemiljonilise elanikkonnaga linnade puhul parimaks variandiks trammiliiklus, väidab üks Itaalia keskkonnaspetsialist.