In regard to the letter, “Roundabouts are dangerous,” I can only think the writer ether works for or owns stock in a traffic signaling company. Having lived in England where roundabouts can be more common than stop signs, they provide a low-cost, maintenance-free solution to traffic flow. They are the ultimate in on-demand, electricity free, traffic flow and they create unpaved open space. Where an intersection with traffic lights require power, signaling equipment and traffic engineers to maintain (i.e. tax dollars), a roundabout only needs someone to mow the grass or plant flowers if it’s a nice one. Frankly, for a country that is supposed to be a world leader in technology and can’t figure out how to use a roundabout, there is little hope in maintaining that leadership because of other advance scientific methods like .. the metric system.