FORT GREENE - A new traffic light is making a big difference at a busy Brooklyn intersection, thanks to extensive lobbying.Residents of Fort Greene say crossing the intersecting Adelphi and Greene avenues used to be dangerous for pedestrians and drivers. They say they appealed to the New York City Department of Transportation (DOT) and began lobbying for increased safety measures. After studying traffic patterns and the number of accidents at the intersection, the DOT ordered the installation of a new traffic light in December.Drivers and pedestrians alike say in a borough where the streets become more crowded every day, the new traffic light in Fort Greene is making life safer for all.