Transit score for israel v1
â˘
0 gefällt mirâ˘852 views
Transit Score is a metric to measure public transit accessibility. The document discusses calculating Transit Score for Israel using General Transit Feed Specification (GTFS) data. A 100m by 100m grid is overlaid on Israel. Transit Score is computed for each grid cell by processing GTFS data, filtering for specific areas, and normalizing grid cell scores. KML files are generated to view Transit Scores on maps in Google Earth. Higher scores indicate better transit access.
Empfohlen
Empfohlen
Weitere ähnliche Inhalte
Was ist angesagt?
Was ist angesagt? (13)
Andere mochten auch
Andere mochten auch (20)
Ăhnlich wie Transit score for israel v1
Ăhnlich wie Transit score for israel v1 (20)
Mehr von Nachman Shelef
Mehr von Nachman Shelef (20)
KĂźrzlich hochgeladen
KĂźrzlich hochgeladen (20)
Transit score for israel v1
- 1. Transit Score for Israel Nachman Shelef nachman@miu.org.il +972544566016
- 3. Revision 1.0 TRANSIT SCORE FOR ISRAEL
- 4. Transit Score uses GTFS ⢠Transit Score is computed by processing the transit database provided in GTFS format ⢠I used Python to process the GTFS files and to create the Transit Score files
- 5. As of 1May2012 GTFS is Available in IL GTFS = General Transit Feed Specification ⢠Enables many transit related indicators and tools including Transit Score Transit Agency New Transit New Transit Applications New Transit Applications Applications GTFS.zip Other Other Transit Other Transit Agencies Transit Agencies Agencies Transit Transit Application Transit Application Developers Application Developers Developers Transit Score General Public
- 6. GTFS Files
- 8. Transit Score for Israel Revision 1.0 ⢠⢠⢠⢠A 100mx100m grid is overlaid on the entire area of Israel A GTFS file is created by geo-filtering any part of Israel from the GTFS file of all of Israel. Geo-filtering is based on a polygon that surrounds the area of interest. This could be a region, a single city, a neighborhood, or the entire area of Israel. A Grid Score is computed for each grid element using the filtered GTFS file (as described in the next slide) The Transit Score (between 0 and 100) for each grid element is calculated by normalizing the Grid Score â Transit Score(i,j) = 100 * Grid Score(i,j) / Max Grid Score of IL ⢠⢠⢠The Transit Score for each grid element is mapped to a color spectrum from red through orange then yellow to green. So that 100 is bright green and 0 is dark red. The color spectrum is adjusted so that green is good, yellow is ok, orange is bad and red is terrible. (sounds easy â it turns out to be difficult) A KML file is generated that includes a polygon of each grid element (that is not zero. i.e there is at least one bus station within a 900m square around the grid element where at least one bus stops) with the color corresponding to its Transit Score. The KML file can be viewed by running GoogleEarth. â Note that for large files you need to install the GoogleEarth application. The pug-in for GoogleMaps only works with small files. â Note too that the large files cause GoogleMaps to work very slowly. ⢠I captured screen shots from GoogleMaps and copied them into this presentation in the following slides.
- 9. Grid Score ⢠⢠100m 100m ⢠⢠50% 50% 80% 80% 100% 500m 900m s_size = 1 ⢠100m square grid element ⢠weight_s = 1.0 m_size = 5 ⢠500m square around grid element ⢠weight_m = 0.8 l_size = 9 ⢠900m square around grid element ⢠weight_l = 0.5 Grid_Score for each grid element = 1.0 * number of trips that stop in grid element + 0.8 * number of trips that stop in 500m square around grid element (but not in grid element) + 0.5 * number of trips that stop in 900m square around grid element (but not in grid element nor in 500m around grid element))
- 14. resources ⢠⢠⢠⢠⢠⢠⢠⢠⢠⢠⢠⢠⢠⢠⢠⢠⢠⢠Transit Score links http://www.walkscore.com/transit-score.php http://www.walkscore.com/transit-score-methodology.shtml http://www.walkscore.com/methodology.shtml GTFS related links: http://groups.google.com/group/transit-developers http://code.google.com/transit/spec/transit_feed_specification.html http://code.google.com/p/googletransitdatafeed/wiki/PublicFeeds http://www.google.com/intl/en/landing/transit http://maps.google.com/help/maps/transit/partners http://opentripplanner.com http://opentripplanner.org http://www.gtfs-data-exchange.com http://www.citygoround.org http://developer.trimet.org http://timetablepublisher.org
- 15. GTFS Tutorials / projects ⢠OTP 2min intro demo (Portland) â ⢠OTP 5min detailed dive-in (Portland) â ⢠http://code.google.com/p/googletransitdatafeed/wiki/TransitFeedDistribution GTFS feed validator (Portland) GTFS feed validator (IL) OSM download (IL) â ⢠http://he.mot.gov.il/index.php?option=com_content&view=article&id=2244:pub-trn-gtfs&catid=167:pub-trn-devinfo&Itemid=304 Download the Transit Feed Python tools â ⢠⢠⢠https://github.com/openplans/OpenTripPlanner/wiki/FiveMinutes Download GTFS for IL â ⢠https://github.com/openplans/OpenTripPlanner/wiki/TwoMinutes http://downloads.cloudmade.com/asia/western_asia/israel GTFS schedule viewer (IL) â â â http://code.google.com/p/googletransitdatafeed/wiki/ScheduleViewer Run using windows executable Run using python source ⢠⢠http://code.google.com/p/googletransitdatafeed/wiki/TransitFeedDistribution OTP 5min detailed dive-in (IL) â https://github.com/openplans/OpenTripPlanner/wiki/FiveMinutes
- 16. âŤ×Ş××××¨× ×ת ק×××× ××ר××⏠âŤ××××ת ×׊×××׊ ×ת××××¨× ×Ś×××ר×ת ע"× ×× ×׊ת ×××ע ×׌×××ר⏠âŤ/âŞhttp://miu.org.il/new/sustainable_transportationâŹâŹ âŤ××ר××× × ×Ş×××ר×:⏠âŤ×פ××ק׌×× ×× ×ת×× ×Ş××××¨× ×ק××Ś× âŞGTFSâŹâŹ âŤ×ץ×ר ×˘× ×׊×××׊ ××פ××ק׌××⏠âŤ××פת××× ×××ר××× × ×Ş×××ר×, ק××Ś× âŞGTFSâŹ×××ר××:⏠âŤ×Š× ×× ×׊ר××⏠âŤ×Š× ××׊ ××⏠âŤ×Š× ×ר×׊××××⏠âŤ×Š× ×׌פ××⏠âŤ×Š× ××ר××⏠âŤ×Š× ר×ת ×××× × â ק××׼ ק×× ×× ×ץ××× ×ת⏠âŤ××פת××× ×××ר××× × ×Ş×××ר×:⏠âŤ××× ×׊××ר ×ת ק××׼ ×- âŞGTFSâŹ×Š× ×× ×׊ר×× ×ק×׌×× ×§×× ×× ××תר⏠âŤ×Š× ××׊ ××, ×ר×׊××××, ×׌פ××, ×××ר××, ××× ××׌ר ק××׼ ק×× ×× ×ץ××× ×ת⏠âŤ×Š× ר×ת ×××× ×.⏠âŤ×××ר×ת ×××× ××׼ ×××⏠âŤ××ץ×ר ×˘× ×׊×××׊ ××׼ ×××⏠âŤ×תר ×ת×× ×× ×ץ××× ×ת××××¨× ×׌×××ר×ת ×××׌ע×ת ×פ×!⏠âŤ××××ת ×׊×××׊ ×ת××××¨× ×Ś×××ר×ת⏠âŤ×˘"× ×× ×׊ת ×××ע ×׌×××רâŹ
- 17. Transit Score for Israel Nachman Shelef nachman@miu.org.il +972544566016