Complex sentence: The train tests involved Kamco staff at East Camberwell, Canterbury, Chatham and Mont Albert stations, while on trams special services on route 86 not open to normal fare-paying passengers were used.
Split into simpler sentences: The train tests involved Kamco staff at East Camberwell, Canterbury, Chatham and Mont Albert stations. On trams, special services on route 86, not open to normal fare-paying passengers, were used.