Expanding Mobility Options for All: Optimizing and Extending the Biking Infrastructure To Generate Complete Street Networks in Atlanta
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2023-05-01
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Edition:Final Report
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Abstract:This study investigates the design of complete networks of complete streets by focusing on the bike network as a connective thread. It emphasizes the accessibility of all destinations by various modes of travel and recognizes that not all streets need to be "complete" to provide safe and convenient access to most destinations for all persons, regardless of age and ability. The objective of this study is to develop, implement, and evaluate an algorithm that would iteratively combine existing fragmented bike lanes, current and future transit hubs, and unmet demand for biking infrastructure into one integrated network which ultimately improves active mobility and public transit ridership. The factors considered to connect the network fragments, and other significant locations mentioned above include transit access, activity location density, proximity to residential and commercial land uses, biking stress, street right-of-way and design, and terrain. The algorithm is implemented for the road network of the City of Atlanta, GA and the resultant network is evaluated in terms of (1) biking stress (based on bike trip route simulations) and (2) traffic flow and biking safety (based on VISSIM traffic simulation model and Surrogate Safety Assessment Model). The study found that the algorithm-generated network, despite a shorter network length, performed as well as the planned network in reducing biking stress. The simulation on the algorithm-generated network gave a particularly better result for the trips that are accessing transit hubs, which suggests that the algorithm guarantees a network with better multi-modality between active transportation and public transportation.
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