There's a lot of science behind the idea: http://jalopnik.com/5533260/why-street-signs-make-traffic-more-dangerous http://jalopnik.com/5533260/why-street-signs-

There's a lot of science behind the idea: http://jalopnik.com/5533260/why-street-signs-make-traffic-more-dangerous http://jalopnik.com/5533260/why-street-signs-make-traffic-mo... http://thecityfix.com/blog/naked-streets-without-traffic-lights-improve-flow-and-safety/ http://thecityfix.com/blog/naked-streets-without-traffic-lig... http://www.wired.com/2004/12/traffic/ http://www.wired.com/2004/12/traffic/