7.1. SR 02-03-2020 - Laserfiche WebLink

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Copart USA Traffic Impact Study 1/14/2020 Elk River, MN E. SAFETY AND MITIGATION MEASURES As stated previously, the intersection of TH 10 & Jarvis was found to operate at LOS-A in the unsignalized condition. This is primarily due to the heavy through traffic on TH 10 that is free flow, and the comparatively minor traffic on Jarvis and Cleveland approaches, since theses currently controlled by side -street stop condition. As part of the data collection, Westwood viewed traffic operation at the intersection for twelve hours (6 a.m. to 6 p.m.) throughout an average day. During that time, there were instances when traffic queued to the north and south of TH 10. In addition, there were instances when traffic attempting to turn left onto TH 10 from the side street would find a gap in the traffic coming from the left, proceed to the median and wait for an adequate gap in traffic before completing the left turn onto TH 10. As part of the analysis for the Copart development, Westwood was asked to look at signal warrants at the intersection of TH 10 & Jarvis/Cleveland. As part of this analysis, Westwood conducted turning movement counts at the intersection for a full twelve hours (6 a.m. to 6 p.m.). Westwood compared the existing, projected year 2023 No -Build and year 2023 Build volumes at the intersection against the signal warrants as they appear in the latest version of the Minnesota Manual on Uniform Traffic Control Devices (MnMUTCD). Currently, there are nine traffic signal warrants found in the MnMUTCD, although the satisfaction of a warrant (or warrants) shall not in itself require the installation of a traffic signal: • Warrant 1, Eight -Hour Vehicular Volume • Warrant 2, Four -Hour Vehicular Volume • Warrant 3, Peak Hour • Warrant 4, Pedestrian Volume • Warrant 5, School Crossing • Warrant 6, Coordinated Signal System • Warrant 7, Crash Experience • Warrant 8, Roadway Network • Warrant 9, Intersection Near a Grade Crossing Under Existing and 2023 No -Build volume conditions, signal warrants are not met at the intersection of TH 10 & Jarvis/Cleveland. In the 2023 Build condition, the intersection barely meets two warrants for signalization. (Signal Warrant Analysis sheets for each scenario appear in the Appendix of this document.) Warrant 2 states that the need for a traffic control signal shall be considered if an engineering study finds that, for each of any 4 hours of an average day, the total volume of both approaches 16 Westwood