Weight Evaluation of Criteria Influencing Road Flooding Using Multi-criteria Analysis

Vietnam is in the top five countries most vulnerable to climate change. Vietnam is ranked fourth among countries worldwide with the highest number of people exposed to flood risk. Floods often cause damage to the transportation infrastructure in Vietnam. The assessment of flood risk in road networks should be considered as the problem of multi-index evaluation. Vulnerability analysis of roads that are exposed to flood is an important part of risk assessment and management. Thus, index weight evaluation is the critical issue when quantifying flood vulnerability. In the present paper, the causes and major factors influencing the road flooding in the Red River Delta were investigated. Both subjective and objective weights are studied. In addition, the methodology for determining the weighting factors will be presented in detail.