Sustainability of Public Transport System is a hot topic that has become a rather taboo issue to be discussed in South East Asian countries like Bangkok, Thailand  and Jakarta, Indonesia. Malaysia too with its high vehicle congestion also belong to this category. The respective government dilemma is whether to increase allocation for more highways or to provide more fund to build more Public Transport such as Light Rail Transit (LRT), Mass Rapid Transit (MRT) or Bus Rapid Transit (BRT). The aim of this study is to identify the determinants and challenges in ensuring sustainability of Public Transport in Kuala Lumpur and to propose policy to encourage more LRT ridership. The focus of the study is on LRT Kelana Jaya Line as it has higher ridership. A survey would be conducted using electronic questionnaires to gather the data for content analysis to be carry out.