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Timetable Graphs and CUI Values

Learn about timetable graphs history, automated generation, data import to Excel, capacity utilization, UIC 406 & CUI approaches.

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Timetable Graphs and CUI Values

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  1. Timetable Graphs and CUI Values Automating their Production John Armstrong, Ian Hood and John Preston 11 February 2009

  2. Contents • Timetable Graphs • Background and History • Applications, Issues and Automated Generation • Data Import and Plotting in Excel • Advantages and Issues • Capacity Utilisation • Two Approaches: UIC 406 and CUI • Conclusions

  3. Timetable Graphs

  4. From Tufte (1990)

  5. From Tufte (1990)

  6. Background and History • Timetable Graphs Used Since 1840s • Now a By-Product of Train Planning Software, but… • Still Widely Used for Train Planning and Control in Continental Europe, Japan and elsewhere • Limited Application in North America, UK • Graphical Approaches Useful for Railway Infrastructure Representation

  7. Applications and Issues • Visual Aid/By-Product in UK Train Planning • Useful Starting Point for Preliminary/Small-Scale Train Planning and Capacity Analysis • Arup View: • “Essential and Well-Understood Train Planning Tool” • Spreadsheets: Flexible, Widely-Available and User-Friendly • Manual Data Entry and Manipulation a Problem

  8. Automating their Generation • Data Sources • CIF (Common Interface Format) Data

  9. BSNW811450712100805161111100 PXX1W119111124620204ZEMU BX SWYSW911100 LOWATRLMN 0630 063015 MFL TB LICLPHMJM 0636H0637H 000006379 FL U LIWDON 0642 000000007 LINEWMLDN 0644 00000000 LISURBITN 0646 00000000DF FL LIHCRTJN 0647 00000000 FL LIWOKING 0655H0657H 065606574 T LIWOKINGJ 0658H00000000 LIFRBRMN 0705 00000000 LIBSNGSTK 0716 0718 071607182 T LIWRTINGJ 0721H00000000 LIWNCHSTR 0733 0734H 07330734 T LISHAWFDJ 0737H00000000 FL 1 LIELGH 0743 0744H 074307443 T LISOTPKWY 0747H0749 07480749 T 1 LISTDENYS 0753 00000000 FL LINTHMJN 0754 00000000 LISOTON 0756H0759 075707594 FL T LIREDBDGE 0802H00000000 LITOTTON 0803H0804H 08040804 T LIBKNHRST 0814H0816 081508163 T LISWAY 0820 0820H 08200820 T LINMILTON 0824H0825H 08250825 T LIHINTONA 0829 0829H 08290829 T LICHRISTC 0833H0834H 08340834 T LIPOKSDWN 0837H0838 08380838 T LIBOMO 0841H0843H 084208433 T LIBRANKSM 0848 0848H 084808482 T LIPSTONE 0851 0851H 08510851 T LIPOOLE 0854H0856 085508562 T LIHMWTHY 0900 0901 09000901 T LIWARHAM 0906H0908 090709082 T LIWOOL 0913H0914H 09140914 T LIMORETON 0920 0920H 09200920 T X LIDRCHS 0927 0928H 092709281 T X LIDRCHJN 0929H00000000 LIUPWEY 0934H0935 09340934 T LTWEYMTH 0939 09393 TF

  10. Automating their Generation • Data Sources • Importing the Data to Excel

  11. Automating their Generation • Data Sources • Importing the Data to Excel • Plotting the Graphs in Excel

  12. Automating their Generation • Data Sources • Importing the Data to Excel • Plotting the Graphs in Excel • Advantages • Speed and Accuracy - Time and Cost Savings

  13. Automating their Generation • Data Sources • Importing the Data to Excel • Plotting the Graphs in Excel • Advantages • Issues • Charting Method and ‘Data Feedback’ • Providing Additional Train Information • Multiple Tracks

  14. Capacity Utilisation

  15. Background • Definition of Capacity Capacity as such does not exist [and] railway infrastructure capacity depends on the way it is utilised (UIC 406)

  16. Background • Definition of Capacity • Objectives • Making Best Use of Potential Capacity • Maintaining Service Quality/Reliability

  17. Measuring Capacity Utilisation • Assessment of Timetable ‘White Space’ • Identification of Conflicts between Trains and Calculation of Delays – Simulation • UIC 406 • Timetable Compression by Signal Section

  18. From UIC406 (2004)

  19. Measuring Capacity Utilisation • Assessment of Timetable ‘White Space’ • Identification of Conflicts between Trains and Calculation of Delays – Simulation • UIC 406 • Timetable Compression by Signal Section • Capacity Consumption = Total Consumption Time/Time Window

  20. Measuring Capacity Utilisation • Assessment of Timetable ‘White Space’ • Identification of Conflicts between Trains and Calculation of Delays – Simulation • UIC 406 • CUI (Capacity Utilisation Index) • Timetable Compression by Route Section

  21. From Gibson, Cooper and Ball (2002)

  22. Measuring Capacity Utilisation • Analysis: UIC 406 vs. CUI • Technical headway vs. Planning headway • Overall signalled route vs. separate consideration of junction margins and platform reoccupation times • Full simulation vs. simpler, spreadsheet-based tool

  23. Conclusions

  24. Conclusions • Timetable Graph Production • Advantages of spreadsheet-based automation • Speed and Accuracy • Simplicity and Reduced Cost • Basis of Macroscopic Capacity Analysis and Planning Tool

  25. Conclusions • Timetable Graph Production • Advantages of spreadsheet-based automation • Issues • ‘Data Feedback’ • Provision of Additional Information • Handling of Multi-track Route Sections

  26. Conclusions • Capacity Utilisation Analysis • UIC 406 more detailed and comprehensive than CUI • CUI better suited to preliminary, spreadsheet-based macroscopic capacity utilisation analyses, but… • Inclusion of junctions and stations in analysis requires further consideration of junction margins, etc.

  27. Questions?

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