CHAPTER 4 | MOBILITY DANVILLE 2030 GENERAL PLAN CLASSIFICATION OF DANVILLE ROADS BY TYPE MAJOR ARTERIAL San Ramon Valley Boulevard (Railroad Avenue to Town limits) Sycamore Valley Road (San Ramon Valley Boulevard to Camino Tassajara) Camino Tassajara (Sycamore Valley Road to Town limits) Crow Canyon Road (Camino Tassajara to Town limits) Diablo Road (Hartz Avenue to Camino Tassajara) M I N O R A R T E R I A L Danville Boulevard (Railroad Avenue to Town limits) Hartz Avenue (San Ramon Valley Boulevard to Railroad Avenue) Railroad Avenue (San Ramon Valley Boulevard to Hartz Avenue) Camino Ramon (Greenbrook Drive to Sycamore Valley Road) Green Valley Road (Diablo Road to Stone Valley Road) Diablo Road (Camino Tassajara to Town limits) El Cerro Boulevard (Danville Boulevard to Diablo Road) Stone Valley Road (portion of ROW within Town limits only) Blackhawk Road (Silver Maple Drive to Diablo Road, portion within Town limits) MAJOR COLLECTOR Front Street (Diablo Road to Hartz Way) Camino Ramon (Greenbrook Drive to Town limits) Greenbrook Drive (Camino Ramon to Sycamore Valley Road) El Capitan Drive (Crow Canyon Road to St. Regis Drive) Camino Tassajara (Diablo Road to Sycamore Valley Road) La Gonda Way (El Cerro Boulevard to Danville Boulevard) MINOR COLLECTOR La Gonda Way (El Cerro Boulevard to El Portal) El Portal (Danville Boulevard to La Gonda Way) Del Amigo Road (Danville Boulevard to Verona Avenue) West El Pintado Road (El Cerro Boulevard to Diablo Road) Hartz Way (Hartz Avenue to Front Street) Sycamore Valley Road West (San Ramon Valley Boulevard to Calvary Court) El Capitan Drive (St. Regis Drive to Camino Ramon) Old Blackhawk Road (Camino Tassajara to Maison Drive) Center Way (Crow Canyon Road to Tassajara Ranch Drive) Lawrence Road (Camino Tassajara to Jasmine Way) N E I G H B O R H O O D A C C E S S El Pintado Road (La Gonda Way to El Cerro Boulevard) *All roads not listed above are classified as “Local Streets” Source: Town of Danville, 2012 4·4 DANVILLE 2030 GENERAL PLAN MOBILITY | CHAPTER 4 Stone Valley Rd Road Types Interstate Local Street Minor Collector Minor Arterial Iron Horse Neighborhood Access Major Collector Major Arterial Regional Trail %&'(680 Green Valley Rd Green Valley Danville Blvd El Cerro Blvd Diablo Rd H Blackhawk Rd a r tz A ve Camino Tassajara Sycamore Valley Rd Paraiso Dr El Capitan Dr S a n Finley Rd R a mo Greenbrook Dr Bol n l V Lawrence Rd in a g Camino Ramon e ll r e C y a B l ny v on d Crow C R a d n y C o Dougherty Rd n a R m i d n o T a s s a j a r %&'(680 a 0 0.5 1 Miles Data Sources: USGS 2011. %&'(680 Town Limit Planning Area Boundary FIGURE 11 CLASSIFICATION OF DANVILLE ROADS BY TYPE 4·5 DANVILLE 2030 GENERAL PLAN MOBILITY | CHAPTER 4 Stone Valley Rd Road Types Average Daily Traffic Volume 9,000 ### Interstate Local Street Minor Collector Minor Arterial on I-680 Iron Horse Neighborhood Access Major Collector Major Arterial Average Daily Traffic Volume Regional Trail ### %&'(680 on San Ramon Valley Blvd, Green Valley Rd Green Valley Hartz Ave, and Danville Blvd 12,540 ### Average Daily Traffic Volume 13,070 on all other Danville roads 1,760 Danville Blvd 2,900 El Cerro Blvd Diablo Rd 18,320 9,430 10,420 12,400 12,530 14,740 171,000 Ha Blackhawk Rd 4,270 r tz 7,700 21,850 A 12,660 ve 9,230 19,410 9,590 1,000 25,300 6,300 Camino Tassajara 22,330 26,750 Sycamore Valley Rd 2,500 28,060 4,790 17,730 Paraiso Dr 12,680 2,400 17,780 20,210 160,000 1,730 22,070 El Capitan Dr S a n 4,240 Finley Rd R a 23,620 mo 4,510 Greenbrook Dr Bol n 24,590 l V Lawrence Rd in a g Camino Ramon e ll r e 7,710 C 11,780 y a B 9,000 2,080 l ny v on d Crow C R a d n y C o Dougherty Rd n a R m i d n o T a s s a j a r %&'(680 a 0 0.5 1 Miles Data Sources: USGS 2011. %&'(680 Town Limit Planning Area Boundary FIGURE 12 TRAFFIC VOLUMES 2010 4·7 DANVILLE 2030 GENERAL PLAN MOBILITY | CHAPTER 4 susceptible to traffic conditions on Interstate Canyon Road south of Camino Tassajara (24,600 680. The Town discourages such diversions by ADT), Diablo Road west of I-680 (21,900 ADT), maintaining and enforcing speed limits on Town Camino Tassajara east of Crow Canyon Road roadways and designing roads in this corridor to (22,100), and San Ramon Valley Boulevard south limit fast-moving through-traffic. of Railroad Avenue (22,300 ADT). All of these Danville has a well-defined arterial roadway higher volume streets are designated as Major system that connects residential and commercial Arterials. The average daily traffic volumes are all areas to the freeway. The El Cerro Boulevard/ within 10 percent of the volumes recorded in 1998, Diablo Road/Blackhawk Road corridor and the with a few segments going up slightly and others Sycamore Valley Road/Camino Tassajara corridor going down slightly. both provide east-west circulation through the The most critical time of the day for traffic Town. While most segments of these roads have operations in Danville, particularly at key been improved to arterial standards, limited intersections, is the AM peak period, typically segments have been retained at two lanes in lasting from 7 to 9 AM. However, roadways order to retain their rural or residential character. paralleling I-680 experience their highest levels of Crow Canyon Road provides a third east-west congestion during the PM commute peak periods, corridor along the Town’s southern border. The largely due to shopping, service, and school-related configuration of most of the Town’s arterials traffic in and around Downtown Danville. represents their maximum capacity and serves Historically, and consistent with standard to control the speed and volume of pass-through practice in most cities, the performance of streets traffic. and intersections in Danville has been expressed Danville Boulevard, Hartz Avenue, Railroad through a measurement called “Level of Service” Avenue, and San Ramon Valley Boulevard form a (LOS). In traffic engineering practice, streets north-south corridor on the west side of Interstate and intersections are classified into six “levels of 680. This corridor includes segments which have service” reflecting the degree of traffic congestion. high levels of pedestrian and bicycle traffic as well Like a lettered report card, streets are graded on a as segments that are mostly auto oriented. On scale from “A” to “F.” The grades are based on the the east side of the freeway, Camino Ramon runs volume of vehicles passing through an intersection north-south between Crow Canyon and Sycamore or along a street segment relative to the design Valley Roads. There are no other major north- capacity of that street or intersection (this is also south arterials on the east side of I-680. called the volume to capacity ratio, or V/C ratio). Daily traffic volumes help to identify the LOS “A” indicates free flowing traffic with no appropriate classification for a street. Figure 12 delays. LOS “F” indicates jammed conditions, with shows the daily traffic volumes that were counted long delays. by the Town of Danville in various locations during In the past, Danville has used LOS “D” as the 2010. The most recent available traffic counts from benchmark for defining the adequacy of a road’s the California Department of Transportation performance during the peak hour. Roads in the (2010) are shown for I-680. In 2010, traffic volumes Town generally meet this standard today. on Interstate 680 in Danville ranged from 167,000 to 172,000 annual average vehicles per day, an increase in the range of about 16 to 18 percent since 1997. Other than I-680, the highest average daily trip (ADT) volumes are on Sycamore Valley Road east of I-680 (28,100 ADT), Camino Tassajara east 1 Danville’s Routes of Regional Significance include seven intersections of Sycamore Valley Road (25,300 ADT), Crow that are regularly monitored to determine their congestion levels. 4·9 CHAPTER 4 | MOBILITY DANVILLE 2030 GENERAL PLAN In addition, the Contra Costa Transportation shopping, work, and other destinations. Facilities Authority (CCTA) has established LOS standards such as the Iron Horse Trail are particularly for “Routes of Regional Significance.” Routes of important, as they connect Danville to two BART Regional Significance include two corridors within stations, major employment centers, and the Danville and one corridor on the edge of Danville. surrounding region. The Iron Horse Trail also These are: connects residential neighborhoods to one another, to Downtown, to local schools and parks, and to • Danville Boulevard/ San Ramon Valley cities along the I-680 corridor from Dublin to Boulevard south of Sycamore Valley (a single Concord. corridor with a missing segment through Expanding Danville’s bicycle network has been Downtown Danville in the center). a priority for more than two decades, resulting in a highly functional, well-connected system today. • Sycamore Valley Road and Camino Tassajara (a single corridor comprised of two roads). Nearly 50 miles of officially designated bicycle trails, paths, and routes have been developed.3 • Crow Canyon Road (south of Camino Tassajara). REDEFINING “LEVEL OF SERVICE” Intersections on the first two of these corridors are FOR NON-REGIONAL ROUTES subject to an LOS “D” standard, but with a slightly Danville is developing new metrics higher V/C threshold (0.90).