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A two-lane rural highway has a capacity of 2,300 veh/h/ln and a free flow speed (FFS)...

A two-lane rural highway has a capacity of 2,300 veh/h/ln and a free flow speed (FFS) of 55 mph. Based on a 30-min traffic count study, it was found that 850 vehicles (per lane) passed the highway during this time. What is the speed of the 850 vehicles (assume Greenshields model)?

a) 54.2 mph b) 49.4 mph c) 37.4 mph d) 41.6 mph e) 25.3 mph

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