Lines 4 and 6 were converted for rubber tyred stock in 1967 and 1974 respectively. Line 13 ran with MA52 articulated steel-wheel stock, represented by the darker Munich stock. This was later transferred to Line 10. These represent the 'Sprague Stock', mostly built before the first World War. Some photographs of these cars taken by me in 1965 are available on the WWW at NYC Subway Resources .
Train runs till early evening.
Train runs at peak hours. Some stations such as Pont de Levallois have inspection pits in the platform roads. I resorted to pull-ins only where I was stuck for a solution. I don't pretend that the actual methods I've used are accurate - I just used the infrastructure which was available. Ateliers de Vaugirard Depot on Line 12 between Convention and Porte de Versailles in the XVth Arrondissement.