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Mark Culver, PE City of Roseville Value of Time Evaluation Results January 17, 2019 Page 16 The third part of the evaluation considered the value of time. An analysis was completed on each of the proposed scenarios, which compared the change in network delay per vehicle for each scenario relative to the cost of the scenario. The analysis summary is shown in Table 3. Table 3. Value of Time Summary Scenario Project Cost Change in Network Delay (sec/veh) Cost per Second Saved ($/sec/veh) 1 $300,000 -20 $15,000 2* $2,816,250/ $7,798,650 -46 $61,223/ $169,536 3 $8,450,000 -26 $325,000 * For Scenario 2, the cost and cost per second saved calculations reflect both "without/with noise walls". Based on the value of time analysis, Scenario 1 provides the highest amount of delay saving per dollar spent. Although Scenario 2 performs better under both the delay analysis and the throughput analysis, the overall construction costs are significantly higher than Scenario 1. It is not expected that it will be possible to construct the scenario 2 project without the addition of any noise walls, but the evaluation was intended provide a range of expectation. Findings & Conclusions Three separate analyses were performed as part of this study. The first looked at the approach delay for each of the side street movements, the second looked at the overall throughput in the network, and the third looked at a value of time saved for each scenario. Based on the results from each of the analyses, the following are some key takeaways: • Scenario 1 provides significant side -street delay reductions and some improvement in overall network throughput. Most importantly, throughput is not negatively impacted northbound north of County Road C, which indicates that County Road C can still serve the traffic that it currently serves. Scenario 1 also provides for minor at -grade pedestrian improvements. Improvements under Scenario 1 are lowest cost per time saved. • Scenario 2 provides the best side -street delay reductions and the best improvement in overall network throughput. Further, throughput is increased northbound north of County Road C, which indicates that County Road C can serve more traffic than it currently serves. Scenario 2 also provides for minor at grade pedestrian improvements. • Scenario 3 provides significant benefit to the Lydia Avenue intersection with the interchange by greatly reducing side -street delays; however, the interchange has negative impacts to the intersection of County Road C2 due to re-routed traffic. Further, this scenario is expensive with a high-cost per time saved with minimal benefit in overall corridor throughput