A Study to Evaluate Level of Road Service by Using Long-term Probe Vehicle Spatial-Temporal Data and Spatial Pattern Analysis－The Case of Urban Arterial in Taoyuan County
Date Issued
2007
Date
2007
Author(s)
Chang, Chih-Chin
DOI
zh-TW
Abstract
In the related researches of highway service level and travel time estimation, which have been mainly focused on how to spread out the Vehicle Detectors(VD) in order to detect the velocity of the vehicles. Spreading the Vehicle Detectors, which is difficult to execute, consists of the following procedures : road digging, VDs spreading, and road reconstruction. Moreover, the as mentioned procedures could damage the backtops. To apply the procedures in downtown area is even more laborious, due to the limited resource(time and fund) and controls from local authorities. As a consequence, the unsufficient density and numbers of VDs could not well serve the information collecting standards. In spite of using AVI, Data Fusion, and RFID techniques to improve the research which use VD for the main data collector, the high cost of data collection is still an obstacle to comprehensive application. Using probe vehicle providing the related data for traffic management would be a much economic and efficient method. On the other hand, the complex traffic conditions in downtown area, and also the influences of traffic lights, make it difficult to apply probe vehicle method to evaluate the service quality for traffic roads and t o estimate traveling time. Therefore, the actual travel time and distance of the vehicle has to be further identified in order to reconstruct the real situation of traffic condition.
This research is collaborated with Logistics Management Center at Ching-Yun University. Data of research is collected and performed by using OBU, which is set on the probe vehicle from Tao-Yuan Ya-Tung Customer Bus Company. Three hundred thousand records have been collected from 2004/06/01 till 2004/06/30 from the vehicles running in the area from Tao-Yuan Lou-Chu County Chung-Cheng road to Nan-Kan road . We have used the methodology and technology of Geography Information System (GIS) and Spatial Data Mining to evaluate the service quality for the probe vehicle at the downtown areas. The research indicates that by using higher and deeper imagination data, we may not only separate the time and scope of vehicle traveling and stopping time, but also estimate the reliable average traveling velocity for the vehicles without VDs at the downtown area, the service quality data for the traffic road could be a good reference for related traffic management authorities.
Subjects
空間型態分析
熱點
探針車
服務水準
Spatial Pattern Analysis
Geography Information System
Hot Spot
Probe Vehicle
Level of Service
Type
thesis
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