You're being generous by saying they "refuse to plan ahead". I think they are actively planning to "cheat" and cut in line, thus screwing over all traffic behind them.
I deal with a merge every day where 3 interstates come together. The first two (I64E, I195N) run together for 1/2 mile and finally merge from 2 lanes to one just before they merge into a dedicated lane on the destination interstate (I95N). They recently (last year or so) added the dedicated merge lane on I95N to try to speed things up, but it has not helped. The real problem is people waiting until the last second to merge 2:1 for the merge on to the destination highway.
I think things would be more effective if traffic from both interstates were forced to merge to a single lane as early as possible. Then traffic would be moving at close to the speed of the destination highway, rather than at 5mph due to all the lane jockeying resulting from the 2:1 merge just before the final merge onto I95N.
I deal with a merge every day where 3 interstates come together. The first two (I64E, I195N) run together for 1/2 mile and finally merge from 2 lanes to one just before they merge into a dedicated lane on the destination interstate (I95N). They recently (last year or so) added the dedicated merge lane on I95N to try to speed things up, but it has not helped. The real problem is people waiting until the last second to merge 2:1 for the merge on to the destination highway.
I think things would be more effective if traffic from both interstates were forced to merge to a single lane as early as possible. Then traffic would be moving at close to the speed of the destination highway, rather than at 5mph due to all the lane jockeying resulting from the 2:1 merge just before the final merge onto I95N.