trams on Grafton Street, Dublin, 1920s

At the peak, Dublin had over 97 km of active line (in 1580 mm gauge) and electrification occurred relatively early with near-full electrification complete from 1901. Heavy usage lasted from the late 19th century into the 1920s. Parts of the system closed from the mid-1920s, in part replaced by buses. The decline of the trams accelerated in the 1940s and the last trams ran on 9 July 1949 in Dublin city.