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Lec 19, Supply Analysis Part 3: Performance analysis methods for facilities

Lec 19, Supply Analysis Part 3: Performance analysis methods for facilities. Some of the topics in Chapter 7 were covered in CEEn 361 and are covered in CEEn 562 and 662. And some of them just do not have enough info in the text. Hence for this lecture read only p.412-417, p.423-425

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Lec 19, Supply Analysis Part 3: Performance analysis methods for facilities

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  1. Lec 19, Supply Analysis Part 3: Performance analysis methods for facilities • Some of the topics in Chapter 7 were covered in CEEn 361 and are covered in CEEn 562 and 662. And some of them just do not have enough info in the text. Hence for this lecture read only p.412-417, p.423-425 • Exclusive ROW or guideway operations (p.412-417, partly covered in CE361. Get a flavor of transit service supply analysis) • Walkway and pedestrian path LOS (p.423-425, covered in this lecture)

  2. Pedestrian flow as traffic flow Vped = Sped * Dped • Flow-density relationship or Vped = Sped/M where M = pedestrian space (m2/p) [Vped peds/min/m, Sped  m/min, Dped  peds/m2]

  3. Walkways and pedestrian paths LOS terms • Pedestrian flow rate – No. of pedestrians passing a point per unit of time (pedestrians per 15 min or pedestrians per min) • Pedestrian flow per unit of width (pedestrians/minute/ft), vp • Pedestrian density (No. of pedestrians per unit of area) • Space (ft2/p) • Speed-average walking speed (ft/s) • vp/c ratio where capacity is about 23 p/min/ft

  4. Determining effective walkway width

  5. Preemption of Walkway Width • Newsstand = 4.0-13.0 ft • Vending stands = variable • Advertising displays = variable • Store displays = variable • Sidewalk cafes (two rows of tables) = 7.0 ft • Etc... • Light pole = 2.5-3.5 ft • Traffic signal pole and boxes = 3.0-4.0 ft • Fire hydrants = 2.5-3.0 ft • Traffic signs = 2.0-2.5 ft • Waste basket = 3.0 ft • Benches = 5.0 ft • Subway stairs = 5.5-7.0 ft • Subway ventilation gratings (raised) 6.0+ ft • Trees = 2.0-4.0 ft • Planter boxes = 5.0 ft

  6. LOS criteria • Capacity is about 23 p/min/ft, or 75 p/min/m

  7. LOS criteria for walkways (1)

  8. LOS criteria for walkways (2)

  9. Queuing area LOS

  10. Pedestrian paths on campus 11:10 AM 3/6/03 11:55 AM 3/6/03

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