Charrette: Main and King Streets JS

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Charrette: Main and King Streets JS

  1. 1. Northampton Main/King Charrette NelsonNygaard Consulting Associates 1
  2. 2. Overbuilt streets cause speeding 2
  3. 3. Planning for pedestrian safety: Principles Leaf, W. and Preusser, D. Literature Review on Vehicle Travel Speeds and Pedestrian Injuries Among Selected Racial/Ethnic Groups, NHTSA (USA), 1999. 3
  4. 4. Wide Streets Are Less Safe Street widths and injury accident rate, graphic by Peter Swift 4
  5. 5. Seattle Conversions (4 to 3 Lane)Roadway Date ADT ADT CollisionLocation Change Before After ReductionGreenwood Ave N 24 to 10 Apr-95 11872 12427 N 80th St to N 50th 58%N 45th Street 45 to 23 Dec-72 19421 20274 Wallingford Area 49%8th Ave NW 18 to 7 Jan-94 10549 11858 Ballard Area 61%Martin Luther King Jr W 15 to 6 Jan-94 12336 13161 North of I 90 60%Dexter Ave N 19 to 16 Jun-91 13606 14949 Queen Ann Area 59%24th Ave NW 14 to 10 Oct-95 9727 9754 NW 85th to NW 65th 28% 5
  6. 6. Taking a Road Diet 6
  7. 7. Seattle Conversions (4 to 3 Lane)Roadway Date ADT ADT CollisionLocation Change Before After ReductionGreenwood Ave N 24 to 10 Apr-95 11872 12427 N 80th St to N 50th 58%N 45th Street 45 to 23 Dec-72 19421 20274 Wallingford Area 49%8th Ave NW 18 to 7 Jan-94 10549 11858 Ballard Area 61%Martin Luther King Jr W 15 to 6 Jan-94 12336 13161 North of I 90 60%Dexter Ave N 19 to 16 Jun-91 13606 14949 Queen Ann Area 59%24th Ave NW 14 to 10 Oct-95 9727 9754 NW 85th to NW 65th 28% 7
  8. 8. Greenwood Avenue: 12,000 cars per day 8
  9. 9. Dexter Ave: 15,000 cars per day 9
  10. 10. 45th Street in Wallingford: 20,000 cars per day 10
  11. 11. Measuring Success To a driver: LOS A LOS F To an economist: LOS F LOS A 11
  12. 12. Why Plan for other Modes? Cars on a street 12
  13. 13. Why Plan for Other Modes? People in Cars 13
  14. 14. So You Can Drive People on a bus 14
  15. 15. So You Can Drive People on bikes 15
  16. 16. Measuring Success 16
  17. 17. Conventional Development Shop School P P P T T T T T T T T T TT T P P Work Play P 17
  18. 18. Mixed-Use District Work Shop School PPlay T T Results: <½ the parking <½ the land area ¼ the arterial trips 1/6th the arterial turning movements <¼ the vehicle miles travelled 18
  19. 19. How land-use affects travel demand 19
  20. 20. How land-use affects travel demand 20
  21. 21. One Square MileOne Square Mile, Contemporary development pattern, Irvine, CA One Square Mile, Traditional development pattern, Portland OR (Jacobs, Allan, Great Streets, MIT Press, Cambridge, MA) 21
  22. 22. One Square MileOne Square Mile, Northampton today One Square Mile, Traditional development pattern, Portland OR (Jacobs, Allan, Great Streets, MIT Press, Cambridge, MA) 22
  23. 23. Poor Parking Availability Produces Traffic CongestionEvery parking space is a magnet forcars. Why provide more parking thanyou have traffic capacity to access thatparking?Poorly managed parking results inmotorists circling for a parking space,from 8 to 74% of traffic in manydowntowns.Eliminating just 10% of vehicles fromany congested location makes trafficfree flowing. Sources: “Cruising for Parking,” Don Shoup, 2006. 23
  24. 24. Parking Wastes Money $20,000 $20,000 $20,000$20,000 $20,000 $20,000 $20,000 $20,000 $20,000 $20,000 $20,000 $20,000 $20,000 $20,000 $20,000 $20,000 $20,000 $20,000 $20,000 $20,000 $20,000 $20,000$20,000 $20,000 $20,000 $20,000 24
  25. 25. What Land Value Are We Losing? Restaurant Table 5’ x 5’ = 25 ft2 Office Cubicle 8’ x 9’ = 72 ft2 Parking Space Bedroom 9’ x 11’ = 99 ft2 10’ x 20’ = 200 ft2 25
  26. 26. Boulder CO: TOD Without the Rails Source: Will Toor & Spenser Havlick 26
  27. 27. Boulder’s strategies No nonresidential parking requirements Public garages – 84% funded by parking fees Employee benefits: free universal transit pass (Eco-Pass); Guaranteed Ride Home; ride- matching services; bicycle parking, etc. Eco-Pass: reduces commuter parking demand by 850 spaces 27
  28. 28. Multi-Use Path System Source: Will Toor & Spenser Havlick 28
  29. 29. A New Bike Culture Source: Will Toor & Spenser Havlick 29
  30. 30. Boulder: Results 70% 60% 50% Drive Alone 40% Carpool Bus 30% Walked & Biked Multi-Mode & Other 20% 10% 0% 1995 1997 1999 2001 2003 2005 30
  31. 31. How to Apply These Ideas Here? 31
  32. 32. Medford, MA 32
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  36. 36. Barrier to Utilization ofEastern Spaces 36
  37. 37. PEDESTRIAN LEVEL-OF-SERVICEAVERAGEPedestrian Delay Seconds Likelihood of Noncompliance A <10 Low B 10-20 C 21-30 Moderate D 31-40 E 41-60 High F >60 Very High 37
  38. 38. PEDESTRIAN LEVEL-OF-SERVICEMAXIMUMPedestrian Delay Seconds Likelihood of Noncompliance A <10 Low B 10-20 C 21-30 Moderate D 31-40 E 41-60 High F >60 Very High 38
  39. 39. SQUARE REDESIGN Transform to a Four LegIntersection? 39
  40. 40. PROPOSED DESIGNNEW DELAY5-MINUTE WALKING AREA 40
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  43. 43. Measure what mattersWhy not Consider…Economic Development Social Justice • Job creation • Do benefits accrue • Real estate value increase equitably? • Retail sales • Are investments spread equitably?Quality of Life Ecological Sustainability • Access to jobs • VMT per capita (=CO2, • Access to shopping NOx, runoff, etc.) • Residential property value • Land use/transportation impact connection 43
  44. 44. Location Matters: Transportation is a Significant Household Expense 44
  45. 45. The Housing & Transportation Costs Trade-Off Where can a 3-person household earning 80% of area median income live in the Twin Cities? Considering Housing Costs Housing + Transportation Costs 45
  46. 46. Housing Costs in Metro Washington, DC 46
  47. 47. Housing & Transportation Costs in Metro Washington, DC 47
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  50. 50. space…. 50
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  52. 52. Northampton Design CharretteMAIN STREET CORRIDOR 52
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  56. 56. 56
  57. 57. Northampton Design CharretteKING STREET CORRIDOR 57
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