Laserfiche WebLink
Expected Forecasts <br /> <br /> The key t,r~n~it improvement in the Tri-Valley is the extension of BART to Dub- <br /> lin/Pleasanton with two local stations. Local WHEEI,.q mutes will be rerouted t~ serve <br /> the BART stations and create transit centers with timed transfers between modes. <br /> WHEELS and County Connection mutes are also rerouted and augmented to serve <br /> new development areas in the expected network: North Livermore, East Dublin, and <br /> Tassejara Valley. <br /> <br /> The expected network also includes nine new express bus mutes to connect the Tri- <br /> Valley with pertions of Contra Costa County, Alameda County, and Santa Clara <br /> County that are not served by BART. More details regarding the expected transit - <br /> network are included in the Appendix. <br /> <br /> Traffic Forecasts <br /> <br /> The 2010 expected forecasts show substantial growth in traffic demand on Tri-Valley <br /> roads. If these traffic increases were to occur, severe congestion would result elmost <br /> everywhere on the freeway system. Congested locations are defined as freeways with a <br /> volume-to-capacity (V/C) ratio of more than 1.0 (vol-me exceeds capacity) and arterial <br /> streets with V/C greater than 0.90 (volume equals 90 percent of capacity or more). <br /> Figure 5-2 identifies the unconstrained 2010 link demand on the regional mutes. <br /> <br /> In many cases the demand-based V/C ratio would be greater than 1.0. This is particu- <br /> larly true at the gateways to the area, including 1-680 north of Alamo, 1-680 through <br /> Sunol, the Alt~mont Pass, and Vasco Road. In reality, the volume can never exceed <br /> capacity. However, the traffic model reports demand volume (how many vehicles would <br /> like to use the mad in the peak). When V/C ratios greater than 1.0 are shown, this <br /> means that "peak spreading' would occur. "Peak spreading' me~n-~ that congested <br /> conditions would last longer than an hour. Based on model projections, many roads in <br /> Tri-Valley would be congested for over three hours during the peak period (See <br /> Table 5-3). Peak-spreading diagrams are included in the Appendix. Figure 5-3 shows <br /> an example. <br /> <br /> Table ,5-3 <br /> Year 201 0 PM Peak-Hour Expected Forecasts Peak Spreading <br /> <br /> Gateway Hours of Congestion <br /> <br /> 1-680 north of Alamo 7 <br /> 1-680 south of Route 84 7 <br /> 1-580 west of Dublin 1 <br /> 1-580 Altamont Pass 4 <br /> Vasco Road north of Livermore 2 <br /> Crow Canyon Road at the County Line 2 <br /> <br />~ Barton-Aschman Associates, Inc. 73 <br /> <br /> <br />