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Res-2021-066
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04. April
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2021-04-20 10:00 AM - Commissioners' Agenda
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Res-2021-066
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Last modified
4/22/2021 1:42:20 PM
Creation date
4/22/2021 1:41:55 PM
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Meeting
Date
4/20/2021
Meeting title
Commissioners' Agenda
Location
Commissioners' Auditorium
Address
205 West 5th Room 109 - Ellensburg
Meeting type
Regular
Meeting document type
Fully Executed Version
Supplemental fields
Alpha Order
n
Item
Request to Approve a Resolution to Adopt the 2021-2023 Road Safety Plan for Kittitas County
Order
14
Placement
Consent Agenda
Row ID
75326
Type
Resolution
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signage could include standard curve signs where not existent or LED-enhanced curve signs where accidents are <br />frequent or serious or fatal on curves such as Upper Peoh Point Rd (Appendix A, Table 1) which has multiple road <br />segments with high scores based on criteria rating in Appendix B, Table 1. Below is a figure depicting our current <br />intersection signage at ruralintersections (left)and an intersection afterthe proposed signage improvements are <br />implemented (right), <br />Srofa{s <br />.mbd.dttG <br />wt.r c8oss <br />Tnffr( <br />Bcforc LED*nhanced rtop slgn inrtallddon: htgh risk ofdtht-rngle <br />craslps <br />lnldrad6n <br />tfoM&d <br />fll.l lI@rgn <br />After LED'enhanced stop sign and 6ddltlffil wamingslgn lnstalladon: <br />slgnlflant rcductlon ln rirk ofright-angle crashes, <br />Figure 1. Depiction of current County rural intersection (left) and a proposed County rural intersection with improvements (right) <br />lmage from carmanah,com <br />Data shows LED-embedded flashing stop signs are proven to make unsignalized intersections safer, especially in <br />rural areas with low lighting. ln a study published by the Minnesota Department of Transporlation (Davis, G.A.2014), <br />researchers found a 41.5% reduction in right-angle crashes after installing flashing LED-enhanced stop signs <br />throughout the state. Another study completed in Texas noted that the introduction of an LED-embedded stop sign <br />produced a28.90/o reduction in the number of vehicles not fulling stopping (Gates et. al. 2004), and a52.90/o <br />reduction in the number of vehicles moving through the intersection without significantly slowing down. A similar <br />yielding resultwas found in Virginia, where researchers also noted even highercompliance during dark hours (Arnold <br />and Lantz 2007). LED-embedded flashing traffic signs are also an efficient means of safety compensation for color <br />deficient or colorblind roadway users, especially during seasonal and lighVdark time changes when sign colors and <br />shades can blend with the natural environment (Chandler, B.2021). <br />0!_I <br />13
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