Abstract
This study investigates the commuter's intention toward future urban rail transport in Phnom Penh by presenting an extension of Theory of Planned Behavior model. Some psychological factors, attitudinal aspects, socioeconomic and travel characteristics that can help explaining the likelihood of future sky train usage are measured. 398 motorists who travel along the study line linking the airport to the Central Market in CBD are asked to complete the questionnaire survey. Applying structural equation modeling, it is found that the extension of TPB constructs, i.e. attitudinal aspect, subjective norm, perceived behavioral control, moral obligation, awareness of consequences, socioeconomic and travel characteristic significantly influence the behavioral intention towards future sky train usage. The outcome of the study can help understanding commuter's current behavioral intention and be additionally useful for future research and study on urban rail transport in Phnom Penh.
