Graduate GIS study maps nine priority cycling corridors and urges more counters

Aug 4, 2026

Reid Unison presented a GIS capstone recommending nine prioritized corridors for high-quality bike facilities and more counters to measure latent demand. His analysis found about 53.4% of housing units served by high-quality facilities and identified southern Arlington gaps.

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A graduate GIS analysis presented to the Arlington Bicycle Advisory Committee identified nine priority corridors the presenter recommends upgrading to high-quality cycling facilities. Reid Unison, a lead service planner at Amtrak who completed the study for his master's capstone, described a binary scoring system that produced three priority tiers and highlighted Corridor 1A (parts of Fairfax Drive and Clarendon Boulevard) as a Tier 1 corridor that would link to Virginia Square GMU Metro Station and serve roughly 3,000 previously unserved housing units.

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