RES 06035 - Laserfiche WebLink

3) Estimate background traffic 4) Add project traffic to future scenarios 5) Estimate intersection impacts 6) Identify mitigation measures Chapter 4 Environmental Setting, Impacts, and Mitigation Measures O. Transportation and Traffic Because of the character of the project - many of the uses are targeted specifically to Pleasanton residents - model results were adjusted to reflect higher local use (and lower regional use) of the facility than is normally expected of conventional commercial and employment uses. The Synchr044 model was used to determine peak hour traffic conditions at the 48 intersections at which the proj- ect may affect traffic. The model was used to generate data files representing traffic movements at those 48 intersec- tions under two future scenarios without the project: . APPROVED DEVELOPMENT WITHOUT PROJECT and . CUMULATIVE DEVELOPMENT WITHOUT PROJECT. Project traffic was added to the Synchro model traffic to create two future with-project scenarios: . APPROVED DEVELOPMENT WITH PROJECT and . CUMULATIVE DEVELOPMENT WITH PROJECT. Intersection operation is characterized by levels of service (LOS) expressed in terms of vehicle delay, ranging from A (none to negligible delay) to F (excessive delay). Pleasanton uses Highway Capacity Manual (HCM) meth- odologies to calculate average delay at unsignalized and signalized intersections For intersections calculated to have operations more con- gested than LOS D, determine what measures would improve operations to LOS D or better. Appendix F presents a description of the modeling inputs and procedures, together with other transportation background information, including a series of figures showing intersection turning movement volumes for each of the analysis scenarios. 2. Setting The Bernal Property Phase II Specific Plan area (the "Plan" or the "project") is comprised of 318 acres in three areas - Western, Central, and Eastern - separated from one another by strong physical boundaries including 1-680 separating the Western and Central Areas, and the Union Pacific Railroad right-of-way separating the Central and Eastern Areas. 44 The Synchro model complements the Pleasanton Traffic Model by translating model.projected travel patterns into assessments of intersection congestion A through F. 129