04 ATTACHMENT 2 - Laserfiche WebLink

DRAFT 3. Circulation Element major planned improvements. To address the future traffic volume, the regional system will need to implement congestion-management tools and to make capacity enhancements that axe not currently identified. Additional lanes such as High Occupancy Vehicle Lanes or High Occupancy Toll Lanes and auxiliary lanes will be required to meet the increase in demand. The region will need to continue the "gateway constraint" approach to limit the amount of through-traffic entering the Tri-Valley. "Gateway constraint" is similar to ramp metering, but on a regional level. The Altamont Pass currently serves as a constrained gateway limiting the number of vehicles that may enter the Tri-Valley from the San Joaquin Valley. Without this constraint, increased congestion and more bottlenecks will form along the I-580 corridor in the Tri-Valley. On a local level, traffic volumes have increased substantially over the past 10 years and will increase beyond existing conditions with approximately 10 million square feet of additional commercial and industrial space and over 2,000 new residential units to be constructed between 2007 and buildout. The General Plan roadway network is designed to accommodate buildout of all land within the Planning Axea. Roadways are sized, intersections are designed, and alternative transit systems are proposed which will enable full development to occur within Ciry level-of-service standards. Since congestion at major intersections will increase, the improvements identified in Table 3-8 and Figure 3-7 are necessary to maintain the flow of traffic on arterials. Several intersections are currently at or approaching the unacceptable service level of E, or will reach this level if the Ciry does not complete these mitigation measures. Table 3-6, above, compares peak-hour traffic volumes in 2006 with those projected for General Plan buildout. Proposed Regional Roadway Improvements To address freeway congestion, the Ciry of Pleasanton has been working with other local agencies, the Alameda County Congestion Management Agency, the Metropolitan Transportation Commission, and Caltrans. The Cities of Pleasanton, Dublin, and Livermore along with Alameda County recently completed the "Tri Valley Triangle Study," which investigated several new regional improvements for future construction. The Triangle Study focused on benefits to the Tri-Valley area and determined which projects would provide the greatest benefit for the least cost. The study also identified funding and construction priorities to ensure project funding in an organized and efficient manner. These projects include: -580: ^ I-580 Westbound High Occupancy Vehicle/Toll Lane from Greenville Road to Foothill Road ^ I-580 Eastbound High Occupancy Vehicle/Toll Lane from Foothill Road to Hacienda Drive (Hacienda Drive to Greenville Road assumed complete in Triangle Study) Circulation Element 012908 clean 3-28 City Council 012908