Ключевые слова: building blocks, cargo, children, civilization, create, deadline, delay, departure, destination, energy, forward, fun, good luck, imagine, impatience, infrastructure, late, life, limit, line, locomotive, move, operation, operational, play, public transportation, rail, railway, ride, risk, rush, safe driving, service, stroke, time, timetable, toy, train, travel, watch, white back, white background,