Effective transport systems are vital for people to carry out their everyday tasks, and for providing access to many of the goods and services that constitute a modern society. In turn, each transport mode has associated effects on people's health, the environment and the economy as a whole. The ability to fully appraise these direct and indirect effects is integral to utilizing evidence-based policy-making. Impact appraisal and evaluation is especially important for Non-Motorised Transport (NMT) as a significant proportion of the benefit it generates for a society is outside of its function as a provider of access, unlike most other modes. Consequently, UN Environment Share the Road Programme has published a report on ‘Calculating the potential climate value of Non-Motorised Transport projects in African cities.’ This study involves the use of an NMT Project Assessment Tool (PAT) developed by UN Environment’s Share the Road programme, to evaluate the potential climate value of different NMT intervention scenarios in two African cities: Cape Town, South Africa and Nairobi, Kenya. This comparative analysis aims to provide meaningful insight into the potential for NMT to assist African cities, and the global community, in achieving their climate-related goals.