You mentioned the need to avoid bridges and particularly tunnels, due to the cost.
One of the features we have in Canada when it comes to our current rail network is a lot of level crossings. I've heard this cited as one of the cost factors when it comes to building high-speed rail. We need to deal with and eliminate all those level crossings, because they don't function with high-speed trains.
Is that a situation you've come across in Europe? How do European projects manage that?