|  Prague - PPT 
               History 
                  
                The metro system of Prague currently consists of three lines, 
                43 stations, and 588 vehicles that transport 531 million passengers 
                a year. The first part of this system opened in 1974 and 
                had a length of 6.7 kilometres. Nowadays, the three lines have 
                a total length of 43.6 kilometres which, with the exception of 
                two small pieces within a bridge and viaduct construction, run 
                completely underground. All stations are equipped with middle-levels. 
                With the exception of two, all stations have island platforms. 
                The length of these platforms is always 100 metres, which limits 
                the vehicles to a maximum of five carriages. Most stations are 
                equipped with elevators and escalators. The deepest station Namesti 
                Miru is built on a depth of 53 metres and contains an escalator 
                of 87 metres. 
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            Source: López, M.J.J., Crime Prevention 
                Guidelines for the Construction & Management of Metro Systems, 
                Den Haag: RCM-advies 1996, pg. 25-26. 
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