What's the rule with climbing slow lanes, are slow cars etc. supposed to move into left and let right hand lane proceed first when two lanes are moving into one again, quite a few of these slow lanes on road to Cork but it seems to me that the slow lane cars try to pass out the cars on lane nearest white line.
To my understanding, you're always supposed to be in the lane furthest to the left when driving on multi-lane roads, unless you're overtaking.
So, on a climbing lane, if there's no one in the left lane, you're supposed to be in that lane.
However, in Ireland, because of ignorant drivers, different rules apply.
1. My car is a decent car, therefore I probably should always be driving in the "fast" lane.
2. I'm a good driver, so therefore I should also always be driving in the "fast" lane.
3. The inside lane is only for losers, and I'm not a loser, so I should always be driving in the "fast" lane.
4. The climbing lane is only for slow lorries, because that's all that they show on the signs for climbing lanes. I'm not driving a lorry, so therefore I'll drive in the outside lane.
5. I'm totally oblivious to what's going around me so I'm going to sit in the outside lane of a road because I don't know any better.
It's debatable whether or not the people undertaking on the inside lane are actually doing anything wrong. Technically if someone in an outside lane is driving slower than you, you can undertake them.
So, when you've muppets crawling along in the outside lane where there's a climbing lane, you will find that people will undertake them in order to make progress.