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Quantifying Route Quality through Viability Indices using Actual Travel Time Data

Quantifying Route Quality through Viability Indices using Actual Travel Time Data
Park, Byungkyu BrianSon, Jeong-IlHwang, H.Ali, O.Jeon, Jun HongPark, TaejoonSon, Sang H.
DGIST Authors
Son, Jeong-Il; Hwang, H.; Ali, O.; Park, Taejoon; Son, Sang H.
Issue Date
20th Intelligent Transport Systems World Congress, ITS 2013
Article Type
Conference Paper
Travel time data becomes widely available with the deployments of location-based technologies including GPS-equipped vehicles and cell phones, Bluetooth readers, Dedicated Short Range Communication devices, etc. This change has made a shift on the existing distance or historical speed based route guidance to travel time-based route guidance. For example, commercial GP-based navigation system utilizes real-travel time data for updating en-route guidance. However, the variability of link travel times was not explicitly considered. This paper explores route viability using real-time link travel time data obtained from Dedicated Short Range Communication (DSRC) devices in Daegu City, South Korea. The purpose of this study was to quantify the quality of alternative routes by explicitly considering route travel time variability. To demonstrate the practical implication of the proposed route viability, a few origin and destination pairs were selected, the distributions of shortest travel time routes (i.e., the best and the second best routes) were generated, and the viability of the shortest routes were compared on the basis of the viability index. It was found that the shortest route based on average travel time is not always the best route due to travel time variability as such viability index will help travelers understand the quality of the routes.
Intelligent Transportation Society of America
Related Researcher
  • Author Son, Sang Hyuk RTCPS(Real-Time Cyber-Physical Systems) Lab
  • Research Interests Real-time system; Wireless sensor network; Cyber-physical system; Data and event service; Information security; 실시간 임베디드 시스템
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Department of Information and Communication EngineeringRTCPS(Real-Time Cyber-Physical Systems) Lab2. Conference Papers

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