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Road Design. Susan Handy TTP Orientation Seminar October 2009. Topics. Network design Facility design. Network Design. What are the two main purposes of streets/roads/highways? What’s the main difference between streets vs. roads vs. highways?.

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Road Design


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    Presentation Transcript
    1. Road Design Susan Handy TTP Orientation Seminar October 2009

    2. Topics • Network design • Facility design

    3. Network Design • What are the two main purposes of streets/roads/highways? • What’s the main difference between streets vs. roads vs. highways?

    4. National Committee on Urban Transportation, 1958

    5. City of Sunnyvale, 1957

    6. ITE Street Layout Principles, 1984

    7. City of Austin, Comprehensive Plan, 1994

    8. Connectivity Measures

    9. Benefits of grid…? • More direct routes • Less distance • Less driving (?) • Less pollution, energy consumption, noise, etc. • More walking/biking • More exercise, less weight, better health, etc. • Better efficiency • Emergency response time • City services

    10. Source: Handy, Paterson, and Butler 2003

    11. Source: Handy, Paterson, and Butler 2003

    12. Source: http://www.fotosearch.com/photos-images/cul-de-sac.html

    13. Berkeley Diverters Source: http://www.ci.berkeley.ca.us/transportation/Bicycling/BB/BicycleBoulevardTreatments.html

    14. Village Homes, Davis Source: Google Maps

    15. Davis Greenbelt System

    16. Houten, Netherlands Source: Google Maps

    17. Source: Google Maps

    18. Facility Design • Responsibility for building: • City/County: local streets, collectors, arterials • State: highways, freeways • Influence on professional practice: • Institute of Transportation Engineers (ITE) • American Association of State Highway and Transportation Officials (AASHTO)

    19. http://www.ite.org/bookstore/RP-011C.pdf

    20. http://www.ite.org/bookstore/RP-011C.pdf

    21. http://www.ite.org/bookstore/RP-011C.pdf

    22. Source: http://www.ashland.or.us/Files/street%20standards_001.pdf

    23. Source: http://www.ashland.or.us/Files/street%20standards_001.pdf

    24. Source: http://www.ashland.or.us/Files/street%20standards_001.pdf

    25. Source: http://www.ashland.or.us/Files/street%20standards_001.pdf

    26. Innovations/Trends • Traffic Calming • Skinny Streets • “Complete the Streets” • Context-Sensitive Design • Others…

    27. Traffic Calming "Traffic calming is the combination of mainly physical measures that reduce the negative effects of motor vehicle use, alter driver behavior and improve conditions for non-motorized street users." - ITE Subcommittee on Traffic Calming

    28. http://www.trafficcalming.org/measures2.html

    29. Roundabouts Traffic Circles http://www.trafficcalming.org/measures2.html

    30. Neckdowns Chicanes http://www.trafficcalming.org/measures2.html

    31. Narrow Street Scenarios 28’ 52-56’ 24’ 47-52’ 20’ 42-48’ http://darkwing.uoregon.edu/~cpw/projects/pdf/featured/tgm_2003/powerpoints/285,13,Narrow Street Scenarios

    32. Narrow Streets Canyon Rim Village, Medford http://darkwing.uoregon.edu/~cpw/projects/pdf/featured/tgm_2003/powerpoints/366,11,Narrow Streets

    33. Sustainable Streets…are rights of way designed and operated to create benefits relating to mobility, ecology and community that support a broad sustainability agenda... Marcy McInelly, SERA/Urbsworks

    34. Sustainable Street Design • Network design: alignment, sizing, connectivity • Allocation of right of way space • Component design: paving, landscape, lighting, furnishings • Sub-grade engineering and design Marcy McInelly, SERA/Urbsworks

    35. Beyond Street Design • Planning, Policy and Institutional Activities • Construction • Operations & Management • Maintenance, Restoration & Repair Marcy McInelly, SERA/Urbsworks

    36. Pillars of Sustainable Streets Movement Ecology Community Photo: Marcy McInelly, SERA/Urbsworks Marcy McInelly, SERA/Urbsworks

    37. Riverfront Parkway and Downtown Streets, Chattanooga, TN Roadway Modifications Image: City of Chattanooga and River City Company

    38. Riverfront Parkway, Chattanooga, TN “Before” Conditions Image: City of Chattanooga and River City Company

    39. Reconstructed Riverfront Parkway Image: City of Chattanooga

    40. http://www.completestreets.com/early.html

    41. https://bookstore.transportation.org/item_details.aspx?ID=110https://bookstore.transportation.org/item_details.aspx?ID=110

    42. “Context-Sensitive Design”

    43. Next up: Pavements