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UDOT study recommends keeping current SR‑143 speed limits; offers cost‑share for feedback signs
Summary
A UDOT speed study for SR‑143 found most drivers near the 85th‑percentile travel 2–6 mph over posted limits and recommended retaining current posted speeds; UDOT offered 50% cost‑share for driver‑feedback signs (estimated $5,000–$6,000 each).
UDOT Traffic Operations Engineer Cody Marchant presented speed‑study results for SR‑143 through Parowan. The initial analysis considered raising an east‑end 35 mph zone to 40 mph to combine speed zones but staff ultimately recommended retaining current limits because the transition from canyon speeds was appropriate and compliance was relatively strong in town.
The study measured 85th‑percentile speeds at about 2–4 mph over posted limits near the interchange and 5–6 mph over in some 40 mph approach zones entering town; compliance in 30 mph zones within town was notably high. Marchant described a multi‑strategy speed management approach—education, enforcement, and signage—and noted UDOT’s cost‑share program can cover 50% of driver‑feedback sign costs (signs typically $5,000–$6,000). Councilmembers expressed interest in pedestrian crossing alerts and gateway signage as development continues.
Why it matters: The study supports keeping current speed zones while offering local tools (feedback signs, improved signage) and partner funding to improve compliance and pedestrian safety as development proceeds.
