Fighting cable theft with technology
More innovative technology is being brought in to combat the problem of cable theft.
Network Rail says last year, passengers were delayed by more than 6000 hours because of the problem.
Criminals are targeting the cables to sell the metal they contain as scrap.
An increase in copper prices led to incidents rising by more than 50% last year.
Network Rail's Steven Haulston showed our transport correspondent, Richard Scott, some of the devices being used to stop the thefts.