Following the end of World War II, tram services were resumed in June 1945, initially with only limited service (lines 1, 3, 5, 7, 9, 10, 12, 13, 16, 24, 25). Line 5 was split into line 5 and line 12. Some lines were returned to service in later years: lines 2, 17 and 18 (in 1947) and 4 (in 1948). Between 1945 and 1949, the emergency line 26 was the tram line with the highest line number, followed by line 11. In 1948 and 1949, a special tram S ran as an express service from line 25 to Amstel station.