Transport planning decisions can have large and diverse equity impacts and evaluating these can be challenging but this is an important element as equity is considered as a major policy goal in transport policy (Litman, 2022). Whilst there are various ways to measure the impacts of equity, use of logsum has not been widely discussed yet. The logsum is a disaggregate measure that can capture the impact of land-use, transport, individual characteristics and their interactions on accessibility. It is capable of capturing accessibility benefits from changes in the distribution of activities as it accounts for both changes in generalised transport costs and destination utility. Therefore, this paper explores the use of logsum method to evaluate the impacts of transport projects on accessibility. It also reviews the literature on measuring transport equity and using logsum as an assessment tool for transport infrastructure. The case study, using Regional Modelling System (RMS) developed by the National Transport Authority (NTA), will show where logsums are computed in several transport scenarios to assess the distributional impact across social groups and geographic locations.