Improving the Cost-Effectiveness of Urban Freeways, 2017. DBR & Associates.
Abstract: The level of future uncertainty in transportation planning, and more specifically in addressing prevailing congestion on urban freeways, has increased significantly over the past few years. The impact of connected and autonomous vehicles on traffic flow, of Mobility as a Service (MaaS) initiatives, particularly the car-sharing elements, and exciting advances in traffic operations are some of the factors contributing to this uncertainty.
In this paper, two options were considered: widening a freeway by constructing one additional lane in each direction of a congested urban freeway, and providing a reversible lane using moveable barrier to create an additional lane during the peak period in the peak direction for both the a.m. peak and the p.m. peak.
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