Abstract: Efficient, effective, reliable and inexpensive public transport provision remain the lifeline of economic, social and environmental wellbeing of increasing urbanization of cities all over the world in the face of globalization and world economies integration. The public transport concept of BRT had been successfully implemented in some developed countries cities and emerging industrialized cities centres as a cost effective option of a modern public transport technologies as metro, light rail and tram service capabilities. This innovation had just been implemented in the Lagos metropolitan area of Nigeria. It is in this light that this study examines the impact of BRT in the passenger�s mobility in the largest metropolitan area of Nigeria. The methodology used in this study is self completion survey method; data were collected on variables of BRT passenger�s mobility effectiveness, efficiency and impacts on problems of mobility in Lagos metropolis. The correlation, pair sample t-test were use for the hypothesis testing, univariate analysis of variance (ANOVA) for subjects interactions effects and multiple regression analysis were tested on the dependent and the independent variable dataset. The study revealed that there is a significant impact of BRT to the passenger�s mobility in Lagos metropolis and highlights the passenger�s constraints while accessing BRT service in Lagos Metropolis.