"The slow rate of investment in infrastructure is a source of major concern for us," P\u00f6rner said. He explained that there is a shortfall of \u20ac1.2bn in the replace of track, signalling and electrical installations."\r\n"There is a huge backlog in the replacement of signalboxes," P\u00f6rner said. "\u20ac600m should be invested each year in signalling, but we only spending \u20ac300m per annum."\r\nAround 30% of signalboxes in Germany are 80 years or older. "Some date back to 1900 when we still had a Kaiser," P\u00f6rner revealed. He said that having so many old mechanical signalboxes requires a lot more people to operate than with modern signalling centres covering a much larger control area.