The
Digital Automatic Coupling (DAC) programme in the EU is seeking to replace the ubiquitous chain-and-buffers coupler on freight wagons with an automatic coupler that includes air and data. They're going to do this on
half a million freight wagons and locomotives in Europe. I got a really good bit of insight from one of the project leaders when I was at the UIC symposium in December:
To most people, the DAC programme is an engineering challenge of testing and selecting the ideal autocoupler, ramming trains together, yanking them apart, etc. But to them, that's secondary. The primary objective of the DAC programme is sorting out how to deal with one fundamental issue: the railcar owners will be the first to incur the expense of retrofitting their fleet, but the last to receive the benefits.
Retrofitting ECP brakes on North American rolling stock would be a similar challenge, and I hope that the AAR(/TTCI) is watching and learning from our friends in Europe, because the European project seems to be moving quickly with very satisfied stakeholders.