Alex Johnson of MSNBC reports: "Last week, Dallas officials reviewed the numbers and decided that a quarter of the cameras they had installed to catch motorists running red lights were too effective. So they shut them down. They are not alone. Faced with data showing that drivers pay attention to cameras at intersections - resulting in fewer ticketable violations and ever-shrinking revenue from fines - municipalities across the country are reconsidering red light cameras, which often work too well."