 The lines have never been electrified, however, and in recent decades the trains have been diesel powered.Close by, to the west, is the northern end of the A35 Autoroute, the principal north-south highway in Alsace which links to Strasbourg and, beyond that, Mulhouse and Basel (St Louis).A linking autobahn to the north has not been constructed, but there is a narrow road running north through Germany towards the Autobahn network, linking to nearby cities such as Ludwigshafen and Karlsruhe.