Appendix H - Transportation Supporting Information COMBINED

Transportation Impact Study for Hidden Canyon Residences & Preserve March 2023 Page | 16 3.0 EXISTING CONDITIONS This section describes existing conditions in the immediate project site vicinity, including roadway facilities, bicycle and pedestrian facilities, and available transit service. In addition, existing traffic volumes and operations are presented for the study intersections, including the results of LOS calculations. 3.1 EXISTING SETTING AND ROADWAY SYSTEM Regional roadway access to the proposed residential development is provided via I-580 and I-680. Access to the project site is provided via Dublin Canyon Road, a two-lane arterial street that parallels I-580 and connects with Foothill Road, Schaefer Ranch Road, and Laurel Creek Drive. Descriptions of the existing roadways are provided as follows: Dublin Canyon Road is two lane east-west roadway parallel to I-580 that extends between Foothill Road to the east and Palo Verde Road, about five miles from the western boundary of Pleasanton, where it becomes Castro Valley Road. Bicycle lanes are provided on segments west of the project site, and to the east near Foothill road, while striped shoulders are provided on segments near the project site and on- street parking is prohibited. No sidewalks are provided on the segment of Dublin Canyon Road bordering the site. Dublin Canyon Road is frequently used as an alternate route by motorists to avoid peak period congestion on I-580, primarily westbound on weekday mornings and eastbound on weekday afternoons, and carries roughly 800 a.m. and 1,000 p.m. peak hour vehicle trips near the project site. Dublin Canyon Road is designated in the City of Pleasanton General Plan as an arterial street, including the segment bordering the project site. Dublin Canyon Road borders the north edge of the project site and connects the project site with other streets in the area including Foothill Road, Laurel Creek Drive, Canyon Meadows Drive, Canyon Creek Circle and Schaefer Ranch Road. The speed limit on Dublin Canyon Road is 55 miles per hour (mph) to the west of the project site. The speed limit changes to 45 mph near the proposed intersection with Street B, where a sign indicting the 45 mph speed limit is accompanied by a radar feedback display that displays the speeds of eastbound motorists. Canyon Meadows Drive is a local street on the north side of Dublin Canyon Road, approximately 500 feet west of the proposed EBRPD Driveway, that provides access to an adjacent residential development. Canyon Meadows Drive serves 83 a.m. and 82 p.m. peak hour vehicle trips based on recent counts (including 69 outbound during the a.m. peak hour, and 31 outbound during the p.m. peak hour). Sidewalks are provided on both sides of Canyon Meadows Drive up to the intersection with Dublin Canyon Road. Canyon Creek Circle is a local street on the north side of Dublin Canyon Road, approximately 300 feet east of the proposed Street B that provides access to 40 single-family residences and is estimated to serve less than 40 vehicle trips during both the a.m. and p.m. peak hours. Sidewalks are provided on both sides of Canyon Creek Circle up to the intersection with Dublin Canyon Road. Foothill Road is a two-to-five lane arterial street extending from the City of Dublin to the north, and the town of Sunol to the south. Foothill Road is a five-to-six lane roadway, located east of the project site and