Millions of pounds worth of damage is being caused to Britain's railway infrastructure by lorry drivers following satellite navigation devices (link below.)
http://news.bbc.co.uk/1/hi/uk/7236181.stm

Network Rail says 2,000 bridges are hit every year by lorries travelling on inappropriate roads.

The resulting disruption is said to cost the rail industry £10m a year and causes 5,000 hours of delays.

Network Rail is appealing to drivers to pay attention to road signs warning them of hazards ahead.

NR also said it was working on a project to map the UK's low bridges and level crossings so that information could be fed into sat-nav software.