Mass transit subway

Mass transportation is any kind of transportation system in which large numbers of people are carried within a single vehicle or combination of vehicles. Airplanes, railways, buses, trolleys, light rail systems, and subways are examples of mass transportation systems. The term mass transit is commonly used as a synonym for mass transportation. 

Mass transit systems have a number of obvious advantages over private means of conveyance, such as the automobile. In the first place, they are a far more efficient way of moving people than is the private automobile. For example, a subway system operating on two tracks 36 ft (11 m) wide can transport 80,000 passengers per hour, hi comparison, an 8-lane freeway 125 ft (38 m) wide can carry only 20,000 passengers per hour. The cost of operating an inter-city bus line typically runs about two cents per vehicle mile, about one-tenth the comparable average for a private automobile. 

The popularity of mass transportation systems varies inversely with the availability of the private automobile. Over the past century, as cars have become less expensive, consumers have opted for private transportation over subways, buses, trolleys, light rail systems, and other forms of mass transit. Between 1915 and 1980, au-... 

Efforts to improve existing mass transit systems, the development of new subway, trolley, and bus lines, the introduction of alternative forms of mass transportation, and attempts to discourage automobile use have had limited successes in specific parts of the United States. On a national level, however, they have had only a limited impact on the way in which citizens choose to move about within a city and from city to city. 

Mass Transit Transportation modes in areas with high-density populations that provide alternatives to automobile use examples include trains, subways, light rail systems, and buses. 

BART was the first wholly new mass transit system built in the US since Philadelphia completed its subway 60 years earlier (Whitt, 1982). Bechtel and the BAC first lobbied for the creation of BART in 1949. It then initiated the establishment of the BART commission in 1951, which undertook the preliminary study (Hall, 1982). In 1953 a preliminary report on BART was presented to the California Legislature urging that mass transit was needed in Bay Area, and that subway builder Parsons Brinckerhoff, Hall, and MacDonald (PBHM) be hired to consult on rail transit. In 1959 Bechtel was hired by the BART district along with PBHM, and the smaller local Tudor construction company, which combined came to be known as (PBTB). Upon completion of the study, Stephen Bechtel, son of Warren Bechtel and now head of the company, steered the BAC in a political campaign to get public bonds for BART. In the 1962 BART referendum, the BAC led the bond campaign... 

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