2010-12-07 - Rider Down, Marble Arch Roundabout (London)

^ to be fair benjam i think there are already quite a lot of threads covering your suggestions already. Albeit maybe not as specific as you're suggesting.

S/

I think benjam was referring to the issues regarding specific roads or gyratory systems that are hazardous (eg Vauxhall Cross, Aldwych, E & C) and therefore need engineering solutions to alter them, rather than general HGV danger.