Engineering consultancy Movares and rail infrastructure provider ProRail have developed a system that makes railway safety hundreds of millions of euro cheaper. Instead of expensive tailor-made computers, the system uses programmable mini-processors originally developed for process industries.
There is a clear separation in the Netherlands between how trains are controlled and how signals and points are controlled. The PCL interlocking system is set to completely open up the market.
Suppliers of PLCs are forced to keep on innovating and maintain low prices, on account of the competitive nature of the process industries. ProRail has now approved PLC Interlocking (known as Eurolocking outside the Netherlands) for use throughout the Netherlands, paving the way for worldwide utilization of the system.
From: Cobouw, 2013-01-29