How ride-sharing can improve traffic, save money, and help the environment

Wednesday, January 4, 2017 - 16:31 in Mathematics & Economics

Traffic is not just a nuisance for drivers: It’s also a public health hazard and bad news for the economy. Transportation studies put the annual cost of congestion at $160 billion, which includes 7 billion hours of time lost to sitting in traffic and an extra 3 billion gallons of fuel burned. One way to improve traffic is through ride-sharing — and a new MIT study suggests that using carpooling options from companies like Uber and Lyft could reduce the number of vehicles on the road by a factor of three without significantly impacting travel time. Led by Professor Daniela Rus, director of MIT’s Computer Science and Artificial Intelligence Laboratory (CSAIL), researchers developed an algorithm that found 3,000 four-passenger cars could serve 98 percent of taxi demand in New York City, with an average wait-time of only 2.7 minutes. “Instead of transporting people one at a time, drivers could transport two to four people at once,...

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