EUROPE HAS AN extensive number of tramway networks , although Melbourne in Australia boasts ownership of the world ’ s largest tram system . All the former communist countries of Central and Eastern Europe , excluding Lithuania , the Republic of Macedonia , Montenegro , Moldova and Slovenia , have extensive tram infrastructures . Many cities closed their tram programmes last century due to the rapid increase in traffic . However , in recent decades , tram networks in countries including the UK , Ireland , France , Germany , Spain and Portugal have grown considerably .