3 September 2008 - Frankfurt am Main, Germany – Flughafen. From the front of SkyLine car 015 you can see the guide rail system. A central girder rail covers the electrical pickups, control wires and horizontal guide wheels, whilst the rubber-tyred vehicle runs on similar girder rails either side. The cars can be coupled together to make longer trains if needed.Frankfurt am Main, Germany – Flughafen. From the front of SkyLine car 015 you can see the guide rail system. A central girder rail covers the electrical pickups, control wires and horizontal guide wheels, whilst the rubber-tyred vehicle runs on similar girder rails either side. The cars can be coupled together to make longer trains if needed. Autor: dvigar