The history of the Rimini-San Marino narrow gauge railway line began on 3 December 1928, when the first stone was laid in the station of San Marino Città .
Inside the same stone were placed a parchment, pieces of silver and a ten-lira gold coin dating from 1883.
It took 8 million working hours, 30 tons of dynamite, 20,000 tons of cement to consolidate the land needed to complete the 32 km long line, 19 of which are in the territory of San Marino.
On 12 June 1932, at the stop of Dogana, near the state border, the Rimini-San Marino railway line was opened. The ribbon was cut by the Italian Minister of Communications Costanzo Ciano in the presence of the Captains Regent.
Passengers could choose different types of carriages. VIPs and especially the Captains Regent traveled in the lounge car, consisting of 6 seats in the lounge and 10 seats in the first-class compartment.
A fist-class single ticket from Rimini to San Marino cost 12.40 liras while third-class tickets were only 7.50 liras, for a trip of 1 hour and 7 minutes.
Thanks to conservative and functional restoration works on the occasion of the 80th anniversary of the Rimini-San Marino Electric Railway, the railcar (AB 03) of the White-Blue Train regained its splendor and since 21 July 2012 it can be seen at the Montale tunnel.