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Cooperative transit tracking using smart-phones

Published: 03 November 2010 Publication History

Abstract

Real-time transit tracking is gaining popularity as a means for transit agencies to improve the rider experience. However, many transit agencies lack either the funding or initiative to provide such tracking services. In this paper, we describe a crowd-sourced alternative to official transit tracking, which we call cooperative transit tracking.
Participating users install an application on their smart-phone. With the help of built-in sensors, such as GPS, WiFi, and accelerometer, the application automatically detects when the user is riding in a transit vehicle. On these occasions (and only these), it sends periodic, anonymized, location updates to a central tracking server.
Our technical contributions include (a) an accelerometer-based activity classification algorithm for determining whether or not the user is riding in a vehicle, (b) a memory and time-efficient route matching algorithm for determining whether the user is in a bus vs. another vehicle, (c) a method for tracking underground vehicles, and an evaluation of the above on real-world data.
By simulating the Chicago transit network, we find that the proposed system would shorten expected wait times by 2 minutes with only 5% of transit riders using the system. At a 20% penetration level, the mean wait time is reduced from 9 to 3 minutes.

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      cover image ACM Conferences
      SenSys '10: Proceedings of the 8th ACM Conference on Embedded Networked Sensor Systems
      November 2010
      461 pages
      ISBN:9781450303446
      DOI:10.1145/1869983
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      Published: 03 November 2010

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      Author Tags

      1. activity classification
      2. bus
      3. crowd-sourcing
      4. power management
      5. public transit
      6. public transportation
      7. realtime tracking
      8. smartphone
      9. subway

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      • (2023)On the independent and sustainable mobility of people with visual impairmentsProceedings of the 20th International Web for All Conference10.1145/3587281.3587705(158-161)Online publication date: 30-Apr-2023
      • (2023)Inferring Station Numbers in Metro Trips Using Mobile Magnetometer Sensor via an Unsupervised K-means Clustering Algorithm2023 8th International Conference on Models and Technologies for Intelligent Transportation Systems (MT-ITS)10.1109/MT-ITS56129.2023.10241558(1-6)Online publication date: 14-Jun-2023
      • (2023)Crowd Estimation Using Sensors for Public Transport (BUSES)2023 International Conference on New Frontiers in Communication, Automation, Management and Security (ICCAMS)10.1109/ICCAMS60113.2023.10525859(1-8)Online publication date: 27-Oct-2023
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      • (2021)Using a Crowd-Sensing Strategy to Support Public Transport TrackingPrecision Positioning with Commercial Smartphones in Urban Environments10.1007/978-3-030-71288-4_2(29-51)Online publication date: 15-Mar-2021
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