04 ATTACHMENT 2 - Laserfiche WebLink

DRAFT Future Conditions 3. Circulation Element Traffic Projection Model In order to forecast General Plan buildout traffic volumes and levels of service, the City of Pleasanton has developed a comprehensive traffic forecasting model. Summarized briefly, the model utilizes information regarding the city's existing and future land uses as well as the existing and future roadway network to project traffic volumes and the performance of major intersections within the city. The model routes traffic as necessary to produce "existing" and "buildout" traffic volumes based on travel times. Using the land development present in Pleasanton in 2006, the model was calibrated such that the model's traffic volumes and distribution projections for the "existing" conditions closely matched the actual traffic counts collected in the spring of 2006. Based on the assumption that the model then closely reflects the city's real-life roadway network, traffic controls, and local and regional traffic origins and destinations, the model is able to simulate changing traffic conditions and travel patterns as land development adds additional traffic to the roadway network and as various network improvements are made to the transportation infrastructure. A detailed description of the modeling process, the traffic network, traffic generation rates, and the land-use inputs is included in the Baseline Traffic Report. Future Traffic Model Runs In order to determine future traffic conditions, the traffic model integrated land-use and transportation network changes proposed by the current General Plan. Table 3-7, above, shows the resulting levels of service. Figure 3-7, above, illustrates the primary roadway improvements required to be added to the existing roadway network in order to maintain LOS D standards. Assuming these improvements are made prior to the generation of future traffic trips, all intersections within the Plannuig Area will be maintained within the City's standard of LOS D except for the Downtown and gateway intersections which are exempt from the LOS D standard. The traffic volumes and levels of service resulting from buildout of all the land uses and improvement of all the roadway segments and intersections are discussed below. Buildout Traffic Conditions The Bay Area, especially the Tri-Valley and San Joaquin Valley, is expected to grow substantially in the next ten years. Traffic volumes along I-580 and I-680 will increase substantially from a combination of development within Pleasanton and a greater increase in traffic from outlying areas. Figure 3-8 shows the morning and Figure 3-9 shows the evening buildout peak-hour traffic volumes. Year 2030 projections by the Metropolitan Transportation Commission indicate traffic will be near to exceeding capacity conditions along both the I-580 and I-680 freeways even with implementation of Circulation Element 012908 clean 3-25 City Council 012908