 By comparison, full service on the New York City Subway system returned gradually from Friday through Saturday morning.Without traffic lights, gridlock was reported as people in Lower and Midtown Manhattan fled their offices on foot; for hours into the evening the streets, highways, bridges and tunnels were jammed with traffic and pedestrians leaving Manhattan, though many civilians helped direct traffic.The bus journey from Manhattan to Washington, D.C. (which normally takes four hours) took more than eight hours, with reports that it took four hours just to get out of Manhattan.