Several proposals came immediately before and after the Second World War calling for modernizing the existing tramways with a network of lines running underground, but all were scrapped due to material shortages. Instead, the system, so badly damaged by the conflict, was almost completely dismantled during the following decade and replaced by buses (with the exception of line 68). However, by 1960, the city was suffering from severe congestion due to the growth in automobile use.
Several proposals for modernizing tram systems were made before and after World War II, but these plans were abandoned because of material shortages. The war-damaged system was largely dismantled in the following decade and replaced with buses, except for line 68. However, by 1960, the city experienced severe traffic congestion due to an increase in automobile use.