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Staff recommends referring Dietz Elkhorn signage and speed requests to Transportation Safety Advisory Committee
Summary
Public works staff reviewed a 2020-21 Dietz Elkhorn corridor study with speed and crash data, described completed projects funded from a $175,000 allocation, and recommended referring additional signage and speed-limit change requests to the Transportation Safety Advisory Committee for evaluation.
Public Works Director Grant Watanabe presented findings from the 2020-21 Dietz Elkhorn corridor study and follow-up traffic-safety work. Watanabe said the corridor study included volume, speed, truck percentages, origin-destination trends, crash data and drone footage and produced short-, medium- and long-term recommendations.
Watanabe reported the current posted speed limit is 35 mph with an average measured speed of 32.5 mph and an 80th-percentile speed of 39.5 mph; he noted the limit had been 40 mph until it was lowered in 2017 to accommodate golf carts. Staff reviewed $175,000 budgeted in FY 2021-22 for safety improvements; two of four earmarked items were used for the Chartwell intersection project, and radar feedback signs were purchased but not installed due to upcoming reconstruction work on Dietz Elkhorn.
On resident requests—installation of speed-monitoring and other warning signs, and a proposed reduction of the West segment speed limit from 35 mph to 30 mph—Watanabe recommended referring both the signage and any speed-limit-change request to the Transportation Safety Advisory Committee (TSAC), which will take up organizational items first and then hear referrals. Watanabe said staff expects TSAC to begin considering specific locations and that one permanent and one mobile radar sign are funded but not yet sited.
Council members asked clarifying questions about which projects were completed (the Chartwell intersection and a Van Raab right-turn-lane) and about the timeline for TSAC consideration. Watanabe said the TSAC meeting schedule will determine when referrals are heard and that staff will bring the matter back to the committee.
