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Riverton studies traffic calming after mixed results from speed dips; 'Do not block' markings eyed for Parkside
Summary
Public works presented before‑and‑after data on speed dips that reduced 80th‑percentile speeds by about 1 mph; the city will explore repainting 'keep clear/Do Not Block' markings for a congested Parkside access while UDOT conducts an access‑management study on 126.
Riverton public works staff presented the results of recent traffic‑calming measures and sought direction from the council on next steps for problem streets and neighborhood egress. Councilors gave mixed responses and asked staff to gather additional data while permitting a short‑term marking option for one congested location.
Carrie, who led the traffic presentation, said staff installed radar‑counting devices to measure traffic speeds and volumes at two speed‑dip test locations. On Lambton View Drive the pre‑installation 80th‑percentile speed measured about 29 mph; after the speed dip it measured about 28 mph. Carrie noted the dips cost roughly $9,000 apiece to construct or to remove and that removing the concrete ramp normally requires chiseling out the concrete and repaving.
The limited effect prompted some councilors and staff to ask whether noninvasive alternatives —…
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