The aim of this study
was to examine and compare the psychological factors influencing driver
speeding behavior in 3 cities in Southeast Asia, focusing on developing
counties, using the Theory of Planned Behaviour (TPB). Data was collected from
570 respondents in the urban areas of Khon Kaen in Thailand, Vientiane in Laos
and Phnom Penh in Cambodia. The psychological factors of TPB include attitude
(AT), subjective norm (SN) and perceived behavioral control (PBC). These
factors were employed to explain speeding intentions in urban road
environments. The Structural Equation Models (SEM) was used to examine and
explain speeding intentions. The results indicated that the TPB could explain
the variance by intentions of drivers in Khon Kaen, Vientiane and Phnom Penh at
33%, 46%, and
84%, respectively. The most significant of the psychological factors for Khon
Kaen drivers was determined by AT, while the speeding intentions of Vientiane
drivers and Phnom Penh drivers were determined by PBC. From this data, the
authorities of each city should create and implement safety policies that can
improve these psychological factors, which could have a positive effect on
drivers?speeding intentions in urban road environments. The outcome of this
study could be useful for understanding the speeding attitudes of drivers in
three different countries and would be beneficial for the development and
introduction of preventative safety measures in these countries as well.
