Can small cars move the large numbers of people who would use general mass transit?
Today, automobiles averaging 1.2 people per vehicle carry more than 97 percent of the urban passenger-miles in the United States. Uninterrupted flow is the key to capacity, not vehicle size. As an example, 60-passenger buses coming two minutes apart, a very high flow rate for an American bus system, provide the same number of capacity units per hour as 3-passenger PRT vehicles coming every six seconds. One PRT line can serve more than six times this capacity, more passengers per hour than come into downtown Boston during the morning rush period via a three-lane expressway.
