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Morning regional cut-through traffic is predominantly southbound, avoiding southbound congestion on Highway 84 and the 1-580/I-680 interchange westbound to southbound, as follows: Stanley Blvd. to enter Pleasanton, mostly destined for Sunol Blvd. and then 1-680, Pleasanton-Sunol Rd., and Foothill Rd. routes southbound; Santa Rita Rd. to Bernal Ave./1-680 southbound ramps via W. Las Positas- Hopyard-Valley; Hacienda Dr. to Stoneridge Dr./1-680 southbound ramps; Foothill Rd. southbound, with most traffic heading for the Stoneridge Dr. interchange, but with some continuing southbound along its full route. The volumes of regional cut-through traffic grows on all these routes, but only the cut- through traffic on the Stanley Blvd. is a significantly large percentage of total traffic (43%), due mainly to congestion on 1-680. Other regional cut-through traffic occurs along Sunol- First-Stanley eastbound and at the Dublin Canyon-Foothill route to 1-580. Afternoon peak hour regional cut-through traffic is primarily northbound to eastbound due both to Highway 84 congestion and congestion on 1-580 east of 1-680. Afternoon cut- through trends include the following: Gateways at Foothill Rd. at Castlewood Dr., Pleasanton-Sunol Rd. at Castlewood Dr., Sunol Rd./1-680, and westbound Stanley Blvd. at Bernal Ave. have large cut- through traffic volumes as a pementage of total traffic; The Bemal Ave. and Stoneridge Dr./1-680 interchanges are used by northbound traffic for routes headed east as an alternative to First St.; The limited use by eastbound regional cut-through traffic of the Stoneridge Dr. interchange southbound and the Hopyard Rd. and Hacienda Dr. interchanges to bypass 1-580 congestion, most of which re-enters the 1-580 freeway; The use of Foothill Rd. to Stoneridge Dr., West Las Positas Blvd., and Bernal Ave. to reach either Stanley Blvd. or more easterly access points along 1-580. While not significant, regional cut-through traffic uses the morning cut-through routes in the afternoon to avoid the 1-580/I-680 interchange. However, Highway 84 is congested southbound in the afternoon by Year 2025, so the "morning" pattern cut-through on Stanley-First/Bernal-Sunol becomes significant. In addition, congestion on southbound 1- 680 in the afternoon causes vehicles to exit at Sunol Blvd. southbound to use Foothill Rd. and Pleasanton-Sunol Rd. southbound. The Year 2025 regional street network includes the planned eastbound HOV lane on 1-580 (Santa Rita to Greenville), a full 6-lane Isabel (Highway 84) from 1-580 (with full interchange) to Stanley (with 4 lanes continuing through Pigeon Pass), Jack London's extension to El Charro, and a 6-lane Dublin Blvd. extended to Livermore. This new eastbound capacity, coupled with increased congestion within North Pleasanton, appears to have reduced to near zero the 1-580 to Stanley cut-through traffic. Improvements to 12