Tramways, mobility and urban growth in Spain, 1900-1936 - The article focuses on the relationship between tramway networks and urban structure in Spain during the period 1900-1936. It states that this relationship should be studied after considering the use of transport and the mobility patterns of different classes, specially the working class. Once these factors have been studied it is possible to assert the impact of the tramway netmark on urban growth. The impact of the tramways on major Spanish cities did not take the form of a transport revolution that would radically changed the urban pattern. Tramways did not direct urban growth until use of tramway lines by the working class became general. This did not happen until World War I. Since then, skilled and some unskilled workers did change their mobility patterns and tramway use experienced a cycle of growth that continued until the late 1950s.