The effects of traffic zoning with regular geometric shapes on the precision of trip production models

One of the first and most critical steps involved in transportation studies is to determine the traffic zoning scheme. A traffic analysis zone (TAZ) is the main unit of the transportation analysis. In most transportation planning studies, the focus is only on the modeling process, while ignoring asp...

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Bibliographic Details
Published in:Journal of transport geography 2019-06, Vol.78, p.150-159
Main Authors: Ghadiri, Mehdi, Rassafi, Amir Abbas, Mirbaha, Babak
Format: Article
Language:English
Subjects:
Configuration management
MAUP
Modelling
Production
Regular geometric shapes
TAZ
Traffic
Traffic analysis zone
Traffic zoning
Transportation
Transportation planning
Travel demand
Trip estimation
Trip production model
Zoning
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Summary:One of the first and most critical steps involved in transportation studies is to determine the traffic zoning scheme. A traffic analysis zone (TAZ) is the main unit of the transportation analysis. In most transportation planning studies, the focus is only on the modeling process, while ignoring aspects such as TAZ definition, configuration, and design. Although the definition of TAZs is one of the key stages in transportation planning studies, a proper approach for the definition is still one of the unsolved issues. In this research, a TAZ with regular geometric shapes, called regular traffic analysis zones (RTAZs), is presented as a new approach to traffic zoning. On the other hand, the accuracy of calculating trip production, as the first step of well-known 4-step transportation demand modeling system, is of high necessity, because this step determines the total number of trips. In the current study, the effects of RTAZs on the results of trip production models (TPMs) for the city of Khoy in Iran were investigated. The results indicated that TPMs based on regular zoning system acted almost similar to traditional zoning system in estimating produced trips and, in some cases, even presented relatively better estimations. Regarding the difficulties encountered in the topic of the traditional traffic zoning system, the present work showed that RTAZs facilitated the modeling process and led to time and cost savings.
ISSN:0966-6923
1873-1236
DOI:10.1016/j.jtrangeo.2019.05.018