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• Sorenson Rd <br />20 — 30 Percent <br />• Cleman Rd <br />20 — 30 Percent <br />• Denmark Rd <br />20 — 45 Percent <br />• Emerson Rd <br />30 — 55 Percent <br />• Prater Rd <br />20 — 30 Percent <br />SUMMARY: <br />1. The posted speed limit of 50 MPH for Carroll Road is consistent with other rural <br />agricultural roadways County wide and with other similar roadways in the <br />geographical vicinity. <br />2. There have been no accidents that support or justify the reduction of speed <br />along Carroll Road. <br />3. Multiple speed studies suggest that both passenger vehicles and truck traffic <br />are observing the posted speed limit, and that the posted speed limit of 50 MPH <br />is appropriate relative to the 85th percentile speeds according to the Manual on <br />Uniform Traffic Control Devices. <br />4. The Badger Pocket area and Kittitas County as a whole are rural with <br />agricultural and multiple aggregate production operations. This promotes <br />heavier truck traffic; legal loads are allowed and accommodated by County <br />roadways. Kittitas County does not have the means to enforce legal loads and <br />must assume industries are following load limit regulations. <br />5. Roadway geometry along Carroll road is adequate and conducive for a 50 MPH <br />speed limit. One location contains a crest vertical curve in the vicinity of Murray <br />Road that is signed appropriately with an advisory speed limit of 35 MPH per <br />the Manual on Uniform Traffic Control Devices. <br />Solely from a Transportation Engineering perspective, Public Works suggests <br />retaining the current posted speed limit of 50 MPH, posting additional warning signs at <br />known crossing locations, deploy signage restricting the use of unruffled compression <br />brakes, and re-evaluating the size and placement of the existing advisory speed limit <br />signs in the vicinity of Murray Road. <br />FISCAL IMPACTS: <br />The cost of adding additional signage to Carroll Road is expected not to exceed <br />$2,500.00. <br />ATTACHMENTS: <br />EXHIBIT 1 VICINITY MAP <br />EXHIBIT 2 TRAFFIC STUDY DATA <br />EXHIBIT 3 2009 MUTCD, SECTION 2B.13 <br />Page 3 of 6 <br />PUBLIC WORKS BOARD OF COUNTY COMMISSIONERS ENGINEER'S REPORT <br />