I've driven many tens of thousands of kilometers throughout close to 20 countries in Europe, and multiple hundred thousand kilometers here in Canada, and have y

I've driven many tens of thousands of kilometers throughout close to 20 countries in Europe, and multiple hundred thousand kilometers here in Canada, and have yet to find a multi-lane highway where "keep right except to pass" doesn't make total sense and work well. As traffic gets congested everyone naturally relaxes adherence to that policy since it's not realistic to uphold in all conditions. I mean, if you have citations that support the argument that it "fails often" I'm all ears, but my lived experience with this highway protocol has been universally positive. I observed that it especially works best in concert with a rule that people entering/merging from the right have the right-of-way, since this reduces uncertainty around "who will go?" that I often witness here in NA (where "keep right to except to pass" is merely a suggestion, or not enforced even if enshrined in law). Regarding speed limit, I'm not arguing against speed limits or adhering to them, and indeed the more consistent the speed of traffic, the safer it is. On that note, my observation is that simply adhering to the speed limit (and attempting to stay at that speed) means regularly passing vehicles -- that is, in most cases, people are indeed following speed limits and a "keep right except to pass" policy correlates well with maintaining consistent speed and flow of traffic. People who want to drive slower can stick to the right lane without any hassle or problem (it's accepted and normal for them to drive slow there), and those who are driving faster can safely pass and then return to that right lane. If there are deep flaws in this process, I'm absolutely not seeing them and have not observed them. (yes, of course, the "two-second" rule makes sense and is a minimum IMO - I imagine if more people followed this, crashes would be massively reduced)