Why do some drivers stop and wait at the beginning of the slip road to join the motorway instead of using the full length of the slip road to merge in gradually. I see it every morning. A car is stopped waiting to join, no one will let them in front of them and the traffic just to piles up behind them. I guiltily undertake the whole queue where I safely can and merge into the motorway lane easily further up.
In Germany. They have something which they call the Reißverschluß, literally zipper feed, which states that both lanes feed into the continuing lane, alternating cars from each lane. No one lane has priority over the other. Would make much more sense as the traffic keeps moving and everybody gets where they want go.