Application of traffic conflict technique (TCT) for safety evaluation is a better alternative for developing countries
S.M. Sohel Mahmud
Safety assessment, including the selection of intervention treatments, is mainly based on the application of traditional approaches. Such approaches have a long history, in terms of their robustness, methodological development, research and application. However, these approaches are relying primarily on the use of historical data and/or field observation which are often questioned due to some major limitations, especially in developing countries. Firstly, traditional approaches have very often been of a “wait and see”, nature, i.e. safety countermeasures are not considered until the crash occurrences become unacceptable. Most of the traditional approaches are heavily reliant on historical crash data, whereas many of the crashes are not reported consistently in crash databases. In addition to the problems related to the underreporting and inconsistent recording, there are some other issues of crash data which present significant challenges. The accumulation of sufficiently large number of sample data is necessary to obtain a statistically reliable result. As a crash is a random event, a long period (around 3 to 5 years) is needed to gather a statistically significant sample. This problem becomes worse when the sample is segregated by different features, such as by location, vehicle types, time of occurrence, etc...
To cite this article: Mahmud SMS. Application of traffic conflict technique (TCT) for safety evaluation is a better alternative for developing countries. Journal of Advanced Civil Engineering Practice and Research 2019;9:1-2.