Tailgating, not keeping proper distance away from other traffic and this is the result? 
I wonder what has actually happened here. Was the lorry tailgating? People don’t follow the two second rule, sit in each-other rear ends not having enough time to stop safely. The first thing the powers that be should do on approach there is to print two chevrons markings and tell people to keep two chevrons apart! http://en.wikipedia.org/wiki/Two-second_rule
I use and teach two seconds for normal cars and 3 seconds from lorries, doubled in the wet! If just this is learned and practiced none of that would have happened! #2secondsgap
https://plus.google.com/b/117772860821330345288/117772860821330345288/posts/99qdnwGSPqD