13a - Parting Thoughts Urban Transportation Planning MIT...

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Unformatted text preview: Parting Thoughts Urban Transportation Planning MIT Course 1.252j/11.540j Fall 2006 Mikel Murga, MIT Lecturer and Research Associate Urban Transportation Planning – Fall 2006 Scope ¡ Systemic Approach ¡ Little Numbers ¡ Transport and Beyond ¡ Focus on … ¡ The Future … and the Past ¡ Critical Challenges ¡ Your Contribution! F.Salvucci & M.Murga 2 Urban Transportation Planning – Fall 2006 Systemic Thinking: an infinite game From: Business Dynamics , by John Sterman F.Salvucci & M.Murga 3 Problem Decision Decisions Actions of Others Side Effects Goals Goals of Other Agents Results Situation Goals Environment Figure by MIT OCW. 1.000.000 1.500.000 2.000.000 2.500.000 3.000.000 viajeros anuales Urban Transportation Planning – Fall 2006 Processes take time to reach a new equilibrium and then… The Learning is always found in the past! $ $ Red modelizada $ Red viaria $ Costa y límites $ Líneas de BilboBus y Metro $ $ Línea 10 (intervalo= 12 min.) Metro (intervalo= 5min.) Paradas de BilboBus y Metro $ $ Línea 10 Metro $ $ .2 .4 .6 Kilometers $ $ $ $ $ $ $ $ $ 10 San Ignacio - A rriaga $ $ $ 500.000 $ $ $ $ $ $ $ $ $ $ $ $ $ 0 1995 1996 1997 1998 1999 2000 $ 4 F.Salvucci & M.Murga Urban Transportation Planning – Fall 2006 The 12 Steps Planning Method : Checklist before Take-Off 1. Scan the environment, review history, identify trends, project future conditions 2. Define problem(s) 3. Develop solution(s) 4. Identify relevant actors, institutions, primary roles and interests 5. Consider implementation 6. Predict outcomes, benefits, costs, impacts 7. Consider operation and maintenance of facilities, services 8. Evaluate alternatives 9. Choose course of action 10. Build constituency, consolidate allies, convert enemies 11. Implement 12. Operate and maintain F.Salvucci & M.Murga 5 Urban Transportation Planning – Fall 2006 Little Numbers are essential! ¡ Vehicle throughput in uninterrumpted flow: ¡ Speed- density curves F.Salvucci & M.Murga 6 400 Note: FFS= Free-flow speed 20 40 60 80 100 120 800 Flow Rate, v p (pc/h/ln) 1200 11 16 22 28 Density = 7 pc/km/ln LOS A FFS = 120 km/h 1300 1450 1600 1750 110 100 90 B C D E 1600 2000 2400 Figure by MIT OCW, adapted from the Transportation Research Board, "Highway Capacity Manual 2000". Urban Transportation Planning – Fall 2006 Little Numbers are essential! F.Salvucci & M.Murga 7 20 40 60 Density (Vehicles/km/lane) 80 100 120 500 1000 1500 Toll Range Flows (Vehicles/hour/lane) 2000 2500 Unstable Flow Shock Wave Flow at the bottleneck Density at Flow Capacity Under- saturated Oversaturated Stable Flow Figure by MIT OCW. Urban Transportation Planning – Fall 2006 Little Numbers are essential! From Meyer and Miller F.Salvucci & M.Murga 8 Five or more signals per mile Less than five signals per mile Thirty miles per hour 50-60 miles per hour Two-lane road Five or more signals per mile Forty miles per hour 4 Travel time, minutes per mile 8 12 400 800 Vehicle volume, vehicles per hour per lane 1200...
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This note was uploaded on 12/06/2011 for the course ESD 11.380j taught by Professor Fredsalvucci during the Fall '02 term at MIT.

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13a - Parting Thoughts Urban Transportation Planning MIT...

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