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DRAFT 3. Circulation Element Table 3-2 (desirable traffic volumes) shows level of service for these types of roadways. TABLE 3-2: DESIRABLE TRAFFIC VOLUMES PER ROADWAY TYPE Per Lane Two-Way Roadway Type Per Hour Average Daily Traffic ° Two-Lane Local Streets - 500 - 3,000 Two-Lane Residential Collectors - 3,000 - 6,000 Two-Lane Collector Streets - 4,000 - 10,000 Two-Lane Arterial Streets 900 15,000 Four-Lane Arterial Streets 900 30,000 Six-Lane Arterial Streets 900 45,000 Six-Lane Freeway 2,000 120,000 Eight-Lane Freeway 2,000 160,000 Ten-Lane Freeway 2,000 200,000 ° Values based on average daily traffic are volumes based on typical traffic conditions rather than a true physical roadway capacity. Source: City of Pleasanton Dept. of Public Works, Traffic Engineering, 2007. While the classification system describes the general functions and volumes of each type of roadway, there is often overlap between classifications and actual characteristics. In some cases, a lower classified street may carry higher volume than a higher classified street. These volumes are anticipated to balance in the future, as the City constructs new roadways and makes improvements to the circulation system. Description of the Existing Roadway Network Regional Facilities Two Interstate freeways and one State Route serve Pleasanton. Interstate 580 (I-580) is an eight-lane freeway which runs east-west from Interstate 5 near Tracy to Interstate 80 in Emeryville. Interstate 680 (I-680) runs north-south from Interstate 80 near Fairfield to Interstate 280 in San Jose. It is a six-lane freeway, south of I-580, and asix-lane freeway with additional high-occupancy vehicle (HOB lanes north of I-580. The intersection of I-580 and I-680 has an ultimate design of four separate flyovers, as specified by Caltrans. Phase 1 of the interchange is complete with the construction of the southbound to eastbound flyover. Supplemental design is currently underway to construct the northbound to westbound flyover. State Route 84 is a two-lane highway which runs from I-580 in Livermore to I-680 in Sunol and continues on to Highway 1 near San Gregorio. State Route 84 has recently been realigned moving the northern section out of the center of the City of Livermore to Livermore's western city limit. Construction is underway to add truck-climbing lanes through Pigeon Pass near I-680 as well as widen the northern section to four lanes. Pleasanton supports the widening of State Route 84 from two to four lanes between I-680 and I-580. This improvement will alleviate cut-through traffic in Pleasanton and congestion on I-580. Circulation Element 012908 clean 3-4 City Council 012908