lec 19, supply analysis part 3: performance analysis methods for facilities
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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 - PowerPoint PPT PresentationTRANSCRIPT
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)
Pedestrian flow as traffic flow Flow-density
relationshipVped = Sped * Dped
or Vped = Sped/M
where M = pedestrian space (m2/p)[Vped peds/min/m, Sped m/min, Dped peds/m2]
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
Walkways and pedestrian paths LOS terms
Preemption of Walkway Width
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
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...