Rennsteigtunnel / Thuringia

Speed Enforcement in Tunnels

Eight kilometers is the length of Germany's longest motorway tunnel. It is one of three tunnels on Thuringian's wooded BAB (Federal Motorway) 71. Eight speed measurement cross-sections were installed for a 19 km stretch of road to reduce speed in tunnels.

In the first four months following the opening of the monitored section of the BAB 71, more than 60,000 violations were recorded. After that point the figure dropped significantly as the effectiveness of the measurement systems in the BAB 71 Thuringia tunnel chain ensured that increasing numbers of road users began to observe the established maximum speed limits.