The almost 700 m long twin-track Old Busch Tunnel (1843) between Aachen and the Belgian border was reopened on October 23, 2011 on a single-track basis following extensive renovation work. In Aachen-South to the north of the tunnel a transfer point with a double track crossover was built.
The New Busch Tunnel (2009) towards Belgium and the Old Busch Tunnel towards Aachen are now in operation – each with a single track catering for a max. speed of 100 km/h. A total of 15 m euros was invested.G.B.