Trucks, my dude. A single truck enters the highway and slows down the entire right lane until it can get up to speed. Do this for hundreds of trucks per day across a handful of exits, plus all the other traffic, and right lane congestion is nearly constant. I don’t know where you are, but in the US middle/left lanes are sometimes signed for “Thru Traffic Only” to avoid additional congestion and slowdowns in the right lane.
Trucks, my dude. A single truck enters the highway and slows down the entire right lane until it can get up to speed. Do this for hundreds of trucks per day across a handful of exits, plus all the other traffic, and right lane congestion is nearly constant. I don’t know where you are, but in the US middle/left lanes are sometimes signed for “Thru Traffic Only” to avoid additional congestion and slowdowns in the right lane.