Yesterday, three pedestrians were killed in Brooklyn, Queens and Manhattan: - At around 12 a.m, Mario Sagastume was hit by a Nissan Maxima when crossed Ashford Street near Liberty Avenue in East New York. The Maxima did not stop, though people were chasing the car. Residents mentioned that there are frequent accidents and that there should be a light at the intersection. - At 4 a.m., a 25-year-old man was killed when a van hit him at Essex and Delancey Streets in Manhattan. The van stopped and the driver was not charged (he was given summons for "operating a vehicle with expired insurance"). Many people can attest to the speed with which vehicles are traveling on Delancey or just off it. In January, blogger John Carney was hit at Delancey and Allen. - At either 1 a.m. or 1 p.m. (the Times says a.m., the Post and Daily News say p.m.), Alice Chow was crossing Lefferts Boulevard near Austin Street when a bus making a left turn hit her.The deaths are also a tragic and unfortunate reinforcement of the importance of Transportation Alternatives' Pedestrian Safety Rally. At 3 p.m., Transportation Alternatives will be holding a rally outside City Hall to demand that Mayor Bloomberg improve the streets for pedestrians.