The drivers coming from the green traffic light at Quincy Street are accelerating, not slowing, by the time they approach the crosswalk. The west-bound vehicles impede the visibility of the pedestrians crossing south-bound so that the east-bound (accelerating) vehicles do not see them until the last possible moment. A flashing pedestrian warning light (similar to the new one in the 3000 block of Mt. Vernon Avenue in Del Ray) would be a good start.