This paper reviews the application of expert systems in a flexible pavement (ESFP). It involves a brief introduction to expert systems explaining how technology plays a role in the creation of latest approaches to highway engineering, development, and maintenance. The paper provides an outline for possibilities of future researches. The purpose of this paper is to summarise the latest outcomes of researches related to the process of engineering, developing and implementing an expert scheme for flexible pavement construction. Moreover, the paper shows the necessity to develop an expert system that can help to control damage in tropical regions. The current expert system does not accommodate the needs for damages and repairs for tropical climates. The tropical region’s highway’s flexible pavements are based on the knowledge of experts who analysed and maintained highway pavements. This system enables the performance engineers to analyse, determine and customise information to help relevant parties during decision-making processes.