At COP26, world leaders agreed to make critical infrastructure resilient to enhance our communities' climate adaptability. Climate adaptation investment is particularly important for projects in the transportation sector, which necessitates the confirmation of the projects' economic feasibility. Cost-benefit analysis (CBA) is generally used for this purpose, although it can only be performed on a case-by-case basis, and cannot cover the big picture of the entire sector. Investment and financial flow (I& FF) assessment fills this gap. Yet, there is a missing link between the two assessments. This study proposes total investment estimation (TIE) to bridge CBA to I&FF assessment, using as a case study the Thai land transport sector. A target-countermeasure cost matrix outputted from TIE provides a big picture of the investment over time which facilitates selection of appropriate climate-proofing countermeasures for the target roads and rails. With the matrix, climate adaptation investments can be customized according to the size of a budget and the importance of the roads and rails. The proposed TIE helps extend findings from the CBA of a particular site to an entire sector of a country by linking it to I&FF assessment.
Vithean, K; Janta, P; Thapmanee, K; Silva, K; Chollacoop, N
Economic analysis framework for climate adaptation investment in the land transportation sector: a Thai case study
Sustainable And Resilient Infrastructure