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from 8.9 percent to 7.9 percent, and the percentage who bus will increase only slightly <br /> from 1.8 percent to 1.9 percent. <br /> <br />21. The OHP recognizes that access management strategies can be implemented to reduce <br /> trips and impacts to major transportation facilities, such as freeway interchanges, and that <br /> communities with compact urban designs that incorporate a transportation network of <br /> arterials and collectors will reduce traffic impacts on state highways, postponing the need <br /> for investments in capacity-increasing projects. <br /> <br />22. OHP policy supports investment in facilities that improve intermodal linkages as a cost- <br /> effective means to increase the efficient use of the existing transportation system. <br /> <br />23. Current literature and research speaks to the relationship between street design and travel <br /> behavior, finding that neighborhood impacts, such as through-traffic and speeding on <br /> neighborhood streets, are affected by street design. For example, research by Richard <br /> Dowling and Steven Colman reported in the article, Effects Of Increased Highway <br /> Capacity: Results of a Household Travel Behavior Survey (1998) found that drivers' <br /> number one preferred response to congestion was to find a faster route if the current one <br /> becomes congested; and Calthorpe and Duany/Platter-Zybecks and Anton Nelleson have <br /> found that the layout and design of buildings and streets will influence user behavior and <br /> that streets can be designed to reduce travel speeds and reduce cut-through trips. <br /> <br />Policies <br /> <br />F.9 Adopt by reference, as part of the Metro Plan, the 20-Year Capital Investment Actions <br /> project lists contained in TransPlan. Project timing and estimated costs are not adopted <br /> as policy. <br /> <br />F. 10 Protect and manage existing and future transportation infrastructure. <br /> <br />F.11 Develop or promote intermodal linkages for connectivity and ease of transfer among all <br /> transportation modes. <br /> <br />F.12 Preserve corridors, such as rail rights-of-way, private roads, and easements of regional <br /> significance, that are identified for future transportation-related uses. <br /> <br />F.13 Support transportation strategies that enhance neighborhood livability. <br /> <br />Transl~ortation System Iml~rovements: Roadways <br /> <br />Findings <br /> <br />24. The Regional Travel Forecasting Model forecasted increased traffic congestion on <br /> roadways over the next 20 years, ranging from almost two to over four times the existing <br /> congestion levels. <br /> <br /> III-F-7 <br /> <br /> <br />