Near where I live in England we have managed motorways which employ electronic displays and enforce the speed limit with speed cameras. http://en.m.wikipedia.o

Near where I live in England we have managed motorways which employ electronic displays and enforce the speed limit with speed cameras. http://en.m.wikipedia.org/wiki/Managed_motorways_in_the_United_Kingdom http://en.m.wikipedia.org/wiki/Managed_motorways_in_the_Unit...