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Traffic study presented at continued hearing finds little projected roadway impact from Regency at Heather Hill
Summary
At a continued site plan hearing, presenters described a 2025 Crossman traffic study that concluded the proposed Regency at Heather Hill would not significantly affect nearby roadways, projecting 86 new AM peak trips and 59 new PM peak trips and reporting no change in level of service.
An unidentified presenter (Speaker 3) at a continued site plan hearing said Crossman’s 2025 traffic study found the proposed Regency at Heather Hill would not significantly worsen conditions on adjacent roadways. "Regency at Heather Hill will not have a significant impact on adjacent roadways," Speaker 3 said.
The study, Speaker 3 said, examined five intersections in Plainville and compared 2025 existing conditions with 2032 future conditions both with and without the project. Data collection occurred in September 2025 between 7 and 9 a.m. and 4 and 6 p.m.; the study identified weekday peak hours as 7–8 a.m. and 4:30–5:30 p.m.
According to the presenter, automatic traffic recorders measured vehicle speeds used to evaluate stopping sight distance at the proposed driveways. The study assumed a 30 mph speed limit on Warren Street (unposted, residential) and reported 80th-percentile speeds of roughly 35–40 mph, which the report used for sight-distance design.
On collisions, Speaker 3 summarized police crash records for the study area and said the signalized location had the most crashes. The transcript contains an unclear statement about the crash total—"5.7 or 19 crashes over the 5 and 5.7 years"—and the presenter also reported single crashes at West Bacon Street, West Bacon and Walnut, and Warren and West Bacon. Speaker 3 said there was no recorded crash at the Heather Hill driveway during the reviewed period and no record from the North Ottawa Police at West Street and Broadway.
The presenter said the study’s no-build scenario incorporated planned 2032 improvements, including an additional left-turn lane on both approaches of South Street and related signal upgrades. Based on the analysis, Speaker 3 said the project is expected to add 86 new trips to the AM peak and 59 new trips to the PM peak, and that there was no change in level of service between the no-build and build conditions.
The traffic presentation concluded the traffic portion of the continued hearing; no formal motion or vote on the traffic analysis was recorded in the transcript.
