I sympathise with them, but Austria and Italy are already well underway on building one of the longest tunnels in the world to alleviate this https://en.wikipedia.org/wiki/Brenner_Base_Tunnel
It’s only for trains though. And there are big problems in Germany, because Bavaria is not building the needed infrastructure to connect the surrounding to the tunnel
It is, but if trains can carry cargo across the mountains far faster and cheaper than trucks then it will remove a lot of the heaviest and loudest traffic from the roads. I don’t imagine that the locals are demanding that there be no traffic whatsoever, and tourist traffic is - while not always welcome - much more likely to be beneficial to them than passing cargo. The Bavarian link is definitely an issue, and a substantial one, but also one that they have some time to solve
It’s also a vital motorway for Austria
Brenner pass is a wonderful road, I’ll drive it at any opportunity