Practice

A four-lane divided arterial carries a first-year ADT of 12,000 veh/day, 10% of it trucks averaging 0.45 ESAL per truck. Traffic is expected to grow 3% per year over a 20-year design period. Take the directional distribution factor $D_D=0.5$ and the lane distribution factor $D_L=0.9$. The design-lane ESALs for the design period are most nearly:

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