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Estimation of Origin-Destination Trip Matrix Using Spatio-Temporal Data of Cell Phone Networks Collected based on the PLU method

Eftekhar, Zahra | 2018

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 51488 (09)
  4. University: Sharif University of Technology
  5. Department: Civil Engineering
  6. Advisor(s): Shafahi, Yousef
  7. Abstract:
  8. Origin-destination (OD) matrix is one of the most important sources of information used in planning and management of transportation networks. Estimation of a precise OD matrix is a fundamental component for enabling the administrative authorities to optimize the use of their transportation network. Traditionally, urban planners use direct approaches including household questionnaires to estimate OD matrices. These methods are time-consuming and costly. Strategies that are more recent like Bluetooth, Wi-Fi, and RFID scanners and detectors include deficient precision and the additional cost of accessories. Exploiting GPS technology in spite of its high locating accuracy, due to user cooperation requirement and limited usage among people and thus statistical bias and lack of data, is not currently feasible.The purpose of this research is to asses the feasibility of using spatiotemporal data of cell phone network for OD matrix estimation. In this regard, the cell phone network data of Shiraz and some extra information have been utilized. The primary advantage of this method, relative to other approaches, is not requiring the direct cooperation of users, passively collecting the data in a significant amount and consecutive periods.In this research, initially, after preprocessing and filtration of the database, presented errors including the ones caused by ping-pong handover effects, using proper algorithms, were detected and omitted. In the next step, using specific assumption, stationary activities were detected. Therefore, the origin and destination of the trips were identified. Moreover, the home location of users was recognized, assuming that each user stays in that position for several hours during each night time. Then, the trip number between each OD pair were calculated using population scale factor and transferring OD pairs from tower zoning system to traffic analysis zoning system. For method validation, results of the study were compared with the ones from Shiraz Household Travel Survey whose data was collected on the same day as the cell phone data was stored. This research shows coefficients of determination with the value of 0.83 for daily and 0.87 for peak hour OD matrices of cell phone network data relatively to SHTS data
  9. Keywords:
  10. Origin-Destination Matrix ; Transportation Networks ; Travel Demand Estimation ; Global Position System (GPS) ; Shiraz ; Ping-Pong Handover ; Cell Phone Spaciotemporal Data

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