ABSTRACT

Traffic congestion problem is now considered as a critical issue, resulting in commuters’ substantial loss of travel time and cost. Although several congestion mitigation strategies have been promptly employed in the country and many congestion measures such as level of service, average travel speed, and volume-to-capacity ratio have been used to analyze, assess, and define the congestion level, it can be seen that presently congestion measures are inconsistently utilized among practitioners. This paper aims to present a survey result illustrating the current state of the practice of congestion measures in Thailand, particularly from practitioners’ perspectives, from both government and private agencies. Analysis and comparison of the measures are presented in terms of their definitions, needs, and abilities to reflect actual traffic conditions, as well as potential problems in applying such measures. Findings are expected to shed some light on the status quo of the current practice in the country, which would further lead to a consistent development of a sound methodology to quantify congestion in Thailand in the future.

KEYWORDS: Congestion Measures, Traffic Congestion, Congestion Survey

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