DISCUSSION. CITY PASSENGER TRANSPORTATION IN THE UNITED STATES.

Keywords: UK, USA, UNITED STATES, LONDON, NEW YORK, BOSTON, CITIES, PASSENGERS, TRANSPORTATION, PUBLIC, TRANSPORT, RAILWAYS, UNDERGROUND, ELEVATED, MOVING, PLATFORMS, TUBES, ELECTRIC, RAPID TRANSIT, ELECTRIFICATION, TRACK, POPULATION, STATIONS, BRAKES, PERMANENT WAY, TRAFFIC, DENSITY, ESCALATORS, SUBWAYS