Supplemental - just viewed the diagram of the system - unlike the installation of veloSTRAIL in the street tram route in Geneva , this system seems to require a special rail section and additional steel plate. The Geneva work was fitted in 4 hours, by digging out between the rails preparing the sleepers/bed and cutting off the keeper from the grooved rail over the distance being converted. If building in from new a standard vignole rail section would be used, as has been done in Hamburg - now