Original: After the last services ran on the night of 2 February 1930 the tunnel was closed until the formal re-opening on 14 January 1931 using E\/3 type tram no. 1931 on new route 31 , with public services starting the following day .
Simplified: It did not re-open until 14 February 1930 which was the formal re-opening . Tram number 1931 was used on the new route 31 .