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Mat á hlutfalli reiðhjólafólks í New York borg sem nýtir sér Citi Bike kerfið

Október 2015

Ragnar Heiðar Þrastarson

@RagnarHeidar

LÍSA - Haustráðstefna 2015

Hvað er Citi Bike?

Bakgrunnur

Hvert er hlutfallið milli Citi Bike reiðhjólafólks og hefðbundins reiðhjólafólks?

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Citi Bike Gögn

Citi Bike Gögn

Rannsóknarspurningar

Er hægt að áætla heildarfjölda reiðhjólafólks með því nota ofangreint hlutfall?

Hver er slysatíðni reiðhjólafólks miðað við áætlaðan heildarfjölda?

Af þeim heildarfjölda reiðhjólafólks sem fer yfir East River (Austurá), hversu margir nýttu sér Citi Bike kerfið  -> Hvert er hlutfallið?

Er hlutfallið stöðugt milli mánaða og yfir árið?

Leiðargreining (Network Analysis)

import arcpy # import ArcPy module
from arcpy import env
env.workspace = "C:\\arcgis\\Ekki_bil_mappa\\GEP690\\ND_dissolved.gdb" #define workspace
env.overwriteOutput = True #allow overwrites

output_gdb = "C:\\arcgis\\Ekki_bil_mappa\\GEP690\\ND_dissolved.gdb"
inNetworkDataset = r'Network\Bike_ND'

facility_list = []

stationrows = arcpy.SearchCursor("CitiBikeStationsManhattan", ["Name"])
for r in stationrows:
    facility_list.append(r.getValue("Name"))
    
for i in facility_list:   
    arcpy.Select_analysis("CitiBikeStationsManhattan", "M" + i, "Name = '" + i + "'")
    print "Exported station " + i

arcpy.CheckOutExtension("Network")

for facil in facility_list:
    arcpy.na.FindClosestFacilities("CitiBikeStationsBrooklyn", "M"+ facil, "Meters",
    inNetworkDataset, output_gdb, "To" + facil, "Directions", "ClosestFacilities" ,
    Use_Hierarchy_in_Analysis = True, Populate_Directions = False,
    Number_of_Facilities_to_Find = 1)

    print "Done routing to station " + facil
    
    arcpy.DeleteFeatures_management("Directions")
    arcpy.DeleteFeatures_management("ClosestFacilities")
    
    print "Done cleaning up"

Flæðikort

Niðurstöður

Niðurstöður

Niðurstöður

Niðurstöður

Niðurstöður

Hlutfallið milli Citi Bike og annara notenda á brúnum yfir East River var frekar stöðugt frá apríl til október 2014 á hverri fyrir sig. Hlutfallið var ...

Niðurstöðurnar benda til að hægt sé að nota upplýsingar úr Citi Bike kerfinu til að meta fjölda reiðhjólaferða á þjónustusvæði Citi Bike. Hafa verður í huga að nokkrir vankantar eru á aðferðinni eins og hvernig Citi Bike ferðirnar eru flokkaðar og leiðargreindar.

Brooklyn brú - 7,9%

Manhattan brú - 6,6%

Williamsburg brú - 3,3%

Heimildir

Basch, C. H., Ethan, D., Rajan, S., Samayoa-Kazlowsky, S. & Basch, C. E., 2014. Helmet Use Among Users of the Citi Bike Bicycle-Sharing Program: A Pilot Study in New York City. Journal of Community Health 39:503–507.

 

Citi Bike (2015a). About Citi bike. NYC Bike Share and Motivate International. Retrieved from https://www.citibikenyc.com/about on 21th of February 2015.

 

Citi Bike (2015b). System Data. Retrieved from http://www.citibikenyc.com/system-data on 15th of February 2015.

 

DeMaio, P. (2009) Bike-sharing: History, impacts, models of provision, and future. Journal of Public Transportation 12.4 (2009): 41-56.

 

Komanoff, C. 2013. NYC Bicycling -- Estimates of Trip Volumes and Miles. Retrieved from http://www.komanoff.net/bicycle/NYC_Bicycle_Levels_Komanoff.xls on 26th of February.

 

New York City Department of Mental Health and Hygiene (2010). Cycling in New York City. Health Bulletin, volume 10, number 1.

 

New York City Department of Transportation (2008).  Sustainable Streets. Department of Transportation.

 

New York City Department of Transportation (2013). 2013 NYC In-Season Cycling Indicator. Polly Trottenberger, Comissioner.

 

Shaheen, S. A.; Guzman, S.; and Zhang, H. 2010. Bikesharing in europe, the americas, and asia. Transportation Research Record: Journal of the Transportation Research Board 2143(1):159–167.

 

Teschke, K., Harris, M. A., Reynolds, C. C., Winters, M., Babul, S., Chipman, M., Cusimano, M. D.,  Brubacher J. R., Hunte, G., Friedman, S. M., Monro, M., Shen, H., Vernich, L. & Cripton, P. A. (2012). Route infrastructure and the risk of injuries to bicyclists: a case-crossover study. American journal of public health, 102(12), 2336-2343.

 

The New York Times (2013a). Out for a First Spin: City’s Bike Share Program Begins by Matt Flegenheimer (May 27th 2013). Retrived at http://www.nytimes.com/2013/05/28/nyregion/bike-share-program-opens-in-new-york-city-after-long-delay.html on 12th of February 2015.

 

The New York Times (2013b). Invitation to a Dialogue: A City of Bike Clutter by Gary Taustine (June 25th 2013). Retrived at http://www.nytimes.com/2013/07/01/opinion/invitation-to-a-dialogue-a-city-of-bike-clutter.html on 26th of February 2015.