Route 62 was the shortest trolley route in the world .
Service extended to Darby when the Route 62 Darby - Yeadon shuttle was merged into the Route 13 on January 24 , 1971 .
Route 62 Darby - Yeadon   was the shortest Route 62 Darby - Yeadon   in the world .
Service extended to Darby when the Route 62 Darby - Yeadon shuttle was merged into the Route 13 on January 24 , 1971 .