Agenda - Council - 01/11/2022 - Laserfiche WebLink

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Trott Brook Crossing EAW Traffic Study Review January 6, 2022 Roadway Characteristics A field assessment was completed to identify various roadway characteristics within the transportation system study area, such as functional classification, general configuration, and posted speed limit. A summary of these roadway characteristics is shown in Table 1. Table 1. Existing Roadway Characteristics Roadway Functional Classification (1) General Configuration Posted Speed Limit (mph) Nowthen Boulevard NW A Minor Connector 2-lane undivided 55 Variolite Street NW Major Collector (2) 2-lane undivided 50 Alpine Drive NW Major Collector (2) 2-lane undivided 45 175th Avenue NW Major Collector 2-lane undivided 50 167th Avenue NW Major Collector (2) 2-lane undivided 50 (1) Functional Classification based on the City of Ramsey's 2040 Comprehensive Plan. (2) Indicates a proposed functional classification in the City of Ramsey's 2040 Comprehensive Plan. From a traffic control perspective, all the study intersections are unsignalized with side -street stop control. Existing geometrics, traffic controls, and traffic volumes in the study area are shown in Figure 2. Intersection Capacity Analysis An intersection capacity analysis was completed using Synchro/SimTraffic software to establish a baseline condition to which future traffic operations could be compared. Capacity analysis results identify a Level of Service (LOS) which indicates how well an intersection is operating. Intersections are graded from LOS A through LOS F. The LOS results are based on average delay per vehicle, which correspond to the delay threshold values shown in Table 2. LOS A indicates the best traffic operation, while LOS F indicates an intersection where demand exceeds capacity. Overall intersection LOS A though LOS D is generally considered acceptable based on MnDOT guidelines. Page 3