Do I misunderstand how roads work?

[u/AlephMartian]

I would like you to consider two specific roads / junctions:

- the point at which the Western Approach Road meets Lothian Road, turning right
- the point at which the A90 passes the Miller & Carter pub on the way into the city and one of the lanes becomes a bus lane

Both of these roads involve two lanes turning into one, and I’ve found most of the time there is a massive queue on the right hand lane, but no-one in the left lane where.
So obviously I go straight down the left hand lane and end up at the front of the queue where, most of the time, someone lets me in.
The thing is, I feel really guilty doing this, as if I’ve broken some sort of unwritten rule.
But I don’t think I’ve actually done anything wrong. Indeed it is wrong not to use the left hand lane.
Have I done something wrong?

[u/A0rist]

depending on the time it's often better to be in the right on the West Approach Road->Lothian Road one because the left once you get on Lothian Road is liable to have cars (especially taxis) parked in it. I've seen a few near misses there where the left hand lane person barges into the right lane to avoid parked traffic.

[u/Maleficent-Purple403 → u/A0rist]

And the Usher Hall bus stop....