When sospan jnr was in Cardiff Uni he would sometimes use our car. After his test he had been given a motorway lesson as never driven on one. He asked me to take him for a refresher.Off we went, and we covered slip roads on and off, lane discipline, reading the road/traffic at longer distances etc. Lane discipline covered moving left when appropriate having judged traffic ahead. Avoiding weaving back and fore at every pass but staying in L2 (L3 sometimes) if getting closer and no rear traffic .
The M4 was my daily commute. One place I advised staying in the R hand lane was on the raised Port Talbot part. The motorway is up on stilts above rooftops. The entry slip roads were short, steep ramps and despite a 50 speed limit were a nightmare for near misses with drivers just pushing in not filtering. Fixed cameras until a couple of years ago, now average speed. Some scary driving seen over the years.
