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Consultant: data support dedicated bike lanes on Parker Avenue; design targets 6‑ft lanes and traffic calming
Summary
Dynamic Traffic presented traffic counts (5,000–7,500 vehicles/day), 85th‑percentile speeds of 28–34 mph, pedestrian/bicycle crash history and proposed cross‑sections (10–11 ft travel lanes; 6 ft bike lanes where feasible), with targeted green markings and intersection extensions to improve visibility and safety.
Pat Downey of Dynamic Traffic described the corridor data and how it shaped the proposed design. "Average daily traffic volumes of between 5 to 7,500 vehicles per day" and 85th‑percentile speeds of roughly 28–34 mph informed the recommendation to move away from shared‑lane markings toward dedicated bike lanes, he said. Downey noted about 7% of crashes in the analyzed five‑year period involved a pedestrian or bicyclist, concentrated near major intersections.
Downey walked through cross‑section options for the central section (Prospect–Boyden): existing cartway widths near 32 feet could be re-striped to 10–11 foot travel lanes with 6‑foot bike lanes adjacent to curbs where space allows. He described enhanced bike markings (bicycle symbol + arrow with intermittent green backing) as a middle ground between minimal striping and full‑length green lane surfacing, citing installation and maintenance costs. At signalized intersections such as Prospect and Boyden, the plan includes dashed green bicycle extensions through the intersection and upgraded crosswalks to align cyclist and pedestrian movements with vehicle flows.
