Although; people who take underground subway trains often travel places without needing to own a car. In NYC; taking an underground subway is key to help reduce cars off the road. Everyday; people in New York drive cars and vans to go places. However; driving your vehicle is only used for professional uses like taxi services, and other business use like delivering hot goods. Typically, driving your own car as a personal form of transportation is risky than taking an underground subway. If you live without a car, and you rely on trains like a subway to go places; most likely you are helping to help reduce cars off the road.