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Network Traffic in Log Angeles

According to this article about Los Angeles traffic of cars, bus, bikes, and pedestrians, car lanes are being removed for buses and bikes. The intention seems to be to reduce car speed and therefore increase safety as well as reduce the number of people driving. In networks terms, this policy is decreasing the capacity of the edges between places (nodes). However this is only in terms of the car networks. For buses and bikes, new edges are being created and the capacity of the edges is increasing. There is an emerging network for buses as well as bikes.

This is related to the topic of traffic networks. Braess’s paradox suggests sometimes removing an edge from a traffic network will improve travel time for everyone. This policy in Los Angeles might invoke Braess’s paradox. By eliminating roads dedicated to cars, the network could improve in travel time for car drivers. However if the people in charges are not careful, Braess’s paradox can worsen the travel time for bus riders. By adding edges for buses to the traffic network, the travel time might worsen. But if the people in charge are aware of Braess’s paradox and avoid it, it will improve travel time for bus riders.

http://www.nytimes.com/2015/09/08/us/a-los-angeles-plan-to-reshape-the-streetscape-sets-off-fears-of-gridlock.html?_r=0

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