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parallel arterial street system (Program 12.1), extension of Stoneridge Drive and other arterials to connect with adjoining cities (Program 12.2), encourage widening Highway 84 (Program 12.3), and cooperate with plans to "...improve capacity, efficiency and safety" (Program 12.7). As used in this report, arterials are all streets of more than two lanes and two-lane streets helping to form the core circulation network of the city and generally having no or few single family residences fronting directly on them. Arterials of this latter type include portions of Bemal Ave., Foothill Rd., Vineyard Ave. east of Bemal Ave., First St., Dublin Canyon Rd., and Stanley Blvd. This report treats West Las Positas Blvd. easterly of Santa Rita Rd. and Del Valle Parkway (both converted to two lanes), Black Ave., Mohr Ave. easterly of Santa Rita Rd., Pleasanton Ave., and Division St/St. Mary St. as collector streets. The current General Plan contains a circulation network designed to integrate with the existing and planned streets of neighboring jurisdictions (Foothill Rd.-San Ramon Valley Rd., Hopyard Rd.-Dougherty Rd., Hacienda Dr., Santa Rita Rd.-Tassajara Rd., E1 Charro Rd.-Fallon Rd., Stoneridge Dr.-Jack London Blvd., Stanley Blvd., and Vineyard Ave.). It planned connections to the regional arterials (primarily freeways) sufficient to accommodate the major employment centers in the city. Its solution for the goal of a "safe, convenient, and uncongested" system was the efficient use of the major arterials within the plan and timing the completion of street improvements to assure uncongested flows (LOS D or better). The 1996 General Plan did not use a traffic model which forecast the future level of regional traffic; it did not project the level of development occun'ing and now planned within the Th-Valley and San Joaquin County; and it did not anticipate how its local street network and traffic policies would be impacted by regional traffic. Key issues identified in the City's public outreach are related to the present and forecast traffic congestion on regional routes. This section of the report attempts to identify what is meant by "cut-through" traffic, project its future impact, and explore basic policy options. Types of Cut-Through Traffic "Cut-through" traffic can mean different things, but it may be generalized as traffic which "should be on some other street." When traffic reasonably "should be on some other street" is easy to define in some instances, but it is more difficult in others. This report separates "cut-through" traffic into three subsets for both discussion and policy purposes. These are described as follows: Regional Cut-Through Traffic: Traffic with no trip end in Pleasanton but which uses city streets in going from an origin outside the city to a destination outside the city. This is the definition staff has used in prior reports and has had the traffic model specifically identify in its model runs. Almost all of the regional cut-through traffic would be better served by a fully functioning 1-580, 1-680, Highway 84 system and would not be on city streets but for the existing and projected congestion on these routes. 7