Needham working group advances road‑diet pilot for Needham Center; traffic study forecasts limited diversion

Tim Folger, chair of the Envisioned Even Center Project Working Group, opened the March 24 meeting by noting there was no quorum and that the session would be informational.

Consultants and town staff used the meeting to summarize recent outreach to businesses, present traffic‑diversion modeling for a proposed road‑diet pilot in Needham Center and show updated design alternatives and temporary materials for a pilot demonstration.

The meeting matters because the pilot would narrow travel lanes through the town center to create space for bike lanes, trees, wider sidewalks and placemaking. If the pilot proceeds, town staff and consultants will collect before‑and‑during traffic counts to test how drivers reroute and to shape long‑term design and mitigation.

Jim (Traffic consultant) told the group the team had shifted the technical focus from a long‑range model to near‑term scenarios that mirror the pilot. “We are instead focusing right now on what the traffic volumes and travel routes might be under the actual more near term pilot program,” he said, and described a three‑step approach: estimate trips that would divert from the center, identify the alternate routes those trips would take, and place counters on those alternate routes to measure change.

Consultants said the largest percentage diversion estimated in the models was 32% for one approach during an evening peak, which equated in their analysis to about 32 vehicles per hour on that approach. Most locations showed far smaller numbers; the single highest raw diversion count cited was 73 vehicles in an eastbound morning peak — roughly one diverted vehicle every 50 seconds. Emily Kaylee of Tool Design summarized the regional origin‑destination analysis and the team’s assumptions: “28% of trips are longer than 32 miles,” she said, and later added, “So reducing the vehicular capacity of Needham Center will likely cause trips to divert to alternate routes, but 10% or less of the total peak hour trips are expected to be diverted.” The consultants emphasized that many of those long trips use regional highways and that drivers are likely to follow real‑time routing tools when choosing an alternate path.

Consultants identified Highland Avenue as the approach most likely to generate local diversions; other approaches would primarily push longer regional trips onto nearby highways. They recommended targeted counts (24‑hour and intersection turning‑movement counts) at those alternate routes before and during a pilot so mitigation can be calibrated to observed behavior.

The project team reviewed outreach to businesses. Staff reported that a March 13 webinar run with the Charles River Regional Chamber drew about 40 registrants and roughly the same number of attendees; about 13–14 business owners had signed up. Polling and chat feedback showed business interest in improved safety, slower vehicle speeds and more outdoor dining and green space, but widespread concern about construction impacts and the need for frequent communication. A participant asked whether parking meters could be turned off during the pilot; Kevin Keane said that would be a Select Board decision and compared it to holiday meter waivers: “we would have to go before the Select Board… it would be similar to what happens at Christmas, where the parking gets waived.”

Design alternatives for several blocks were presented and discussed. For the core block adjacent to the Town Common, the group preferred an option that keeps an amenity/planting strip between parked cars and a raised bike lane, which members said provides better separation for walking and biking and space for street trees and furnishings. East of the Common, two alternatives were shown: one retaining more curbside parking and one that shifts the roadway horizontally to provide wider sidewalks and larger amenity zones. Participants noted tradeoffs between retaining parking and providing curb space for outdoor dining, loading and larger sidewalks; several members urged flexible curb management during the pilot (short‑term curb loading, timed 15‑minute spaces, or temporary loading zones for deliveries).

Project designers reviewed materials for a temporary pilot: flexible delineator posts, painted pavement treatments, movable planters and seating, bike racks and Jersey (concrete) barriers. Sarah (Project designer) noted tradeoffs and reuse: “Jersey barriers… are crash rated,” she said, and suggested the town could involve artists in painting barriers for the demonstration. Staff cautioned that above‑grade planters and seasonal plantings require maintenance; the working group discussed interim maintenance options, volunteer or nonprofit sponsorship and the town’s existing maintenance capacity.

Next steps the team outlined included refining the diversion model, confirming specific count locations, collecting baseline counts before the pilot, coordinating outreach and scheduling a public open house after school vacation to present two holistic plan alternatives. The team tentatively scheduled virtual outreach events for early April and planned to brief the Select Board before the pilot is implemented. No formal vote or policy decision was taken; staff said the pilot and parking‑waiver questions would be routed to the Select Board for decisions.

Questions and concerns that remained on the table included how the pilot would affect emergency response times (consultants proposed keeping Chestnut Street as a two‑lane approach because of the nearby fire station), how to manage deliveries and loading during a lane reduction, and what mitigation the town should deploy on day‑one to reduce delays and driver confusion. Several members stressed the importance of clear messaging and real‑time wayfinding for drivers during the pilot.

The meeting was informational only and adjourned without a formal action or vote.