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__ Mr. Knowles said in this particular example, he could make an adiustment to fix the <br /> area. He noted staff was using multiple software packages. There is a forecasting <br /> model which is different than that used for signal timing and calculating the level of <br /> service, which is also different from that which creates the simulations. They are all <br /> interactive, but any simulation is an approximation of driver behavior and does not affect <br /> levels of service. He noted no simulation is perfect. <br /> <br /> Ms. Fox referred to simulations that show traffic backing up in one direction and <br /> asked if the model assumed the traffic signals were best optimized. <br /> <br /> Mr. Knowles explained how the traffic signalization was programmed in the <br /> model. When simulating small portions of the street network, it is not possible to show <br /> the effect of citywide coordination of traffic signals. <br /> <br /> Mayor Hosterman asked if the simulation could measure how long it takes for a <br /> vehicle to cut through town from northbound 1-680 versus staying on the freeway. <br /> <br /> Mr. Knowles said it depended on the route. Generally when looking at <br /> Sunol/First/Stanley route to Livermore, the cut through traffic begins when 84 <br /> northbound reaches LOS F. This would be faster than dealing with congestion on 84 as <br /> well as faster than going on to 580 and getting off at Airway to reach south Liven-noro. <br /> <br /> Mr. Knowles then presented the simulation for Hopyard and Owens, which <br /> included North Pleasanton Improvement District (NPID) funded improvements. <br /> <br /> Ms. Fox asked how much traffic on the simulation is generated by the 93% <br /> occupancy assumption versus actual existing occupancy? <br /> <br /> Mr. Iserson indicated every project that is approved will most likely be built and <br /> occupancy will be 93%. <br /> <br /> Mr. Knowles said there is a spreadsheet that shows actual occupancy versus <br /> assumed occupancy. <br /> <br /> Mr. Brozosky inquired about the regional assumptions for the year 2010. <br /> <br /> Mr. Knowles said the 2025 scenario assumes build out for the region. For <br /> approved development, the figures only go to 2010. <br /> <br /> Mr. Brozosky surmised that if no more building occurred in Pleasanton, the traffic <br /> would still get much worse because of regional building. <br /> <br /> Joint Workshop <br /> City Council and <br /> Planning Commission 3 03/22/05 <br /> <br /> <br />