Absolutely. Yes, there is. Just to be correct, I did not dismiss the European measures; I said that to shift from one to the other creates difficulties of comparison.
There are ways we are addressing noise, as we speak. The bearings on all our new cars are a lot smoother. The baffle noise on the locomotives themselves have less noise than in the past, and the coupling mechanisms on newer cars are also more efficient. Railroad equipment is designed to last 40 or 50 years. One of the issues is that even if you have a new technology on coupling, it will take several years, if not decades, for it to have a true impact.
Everything we do has this concern for fuel efficiency, environmental friendliness, and noise level in mind. The impact is gradual over time.