Journal of Applied Sciences1812-56541812-5662Asian Network for Scientific Information10.3923/jas.2009.2280.2286BasriNoor Ezlin Ahmad IsmailAmiruddin RahmatRiza Atiq Abdullah O.K. AbdullahNurAkmal Goh AlaniIbrahiem Abdul Razak 122009912Highway construction activities will generate massive amount of different types of debris and pollutants that will degrade the adjacent water bodies and this in turn will affect the ecosystem environment, affect on navigation by the sediments that will be deposited in the river via., various construction activities. The development and main features of a knowledge-based rapid prototyping expert system for highway construction called Highway Construction Expert System (HCES) are described. This rapid prototyping has been developed for only one of the highway construction activities entitled vehicle maintenance, servicing, washing and fueling in which the rapid prototyping will give recommendations on how to minimize the effect of spillage and suspended solids associated with this activity to the adjacent water bodies. An object-oriented model was developed using Matlab, where the rule-based reasoning and other decision processes operate on or across objects. The knowledge and experience were acquired from various textural sources. Preliminary results of this study demonstrated a typical output transcript image of recommendations for the input data presented to the user via., PDF file format. Currently, the rapid prototype of HCES development based solely on texts and in the early stage. It can be used to give advice on how to mitigate the environmental effects due to highway construction activities. The conclusion of this study indicated this system will be beneficial in making decision to consulting engineers, construction engineers, construction managers, construction coordinators, decision makers and civil engineering students.]]>Barrett, M.E., J.E. Kearney, T.G. McCoy and J.F. Malina,19951995Construction Site Best Management Practices (BMPs),20032003Department of Environmental Services City and County of Honolulu,19991999Flanagan, D.C., K. Chaudhari and L.D. Norton,200245113Hittman Associates, Inc.,19761976Wright Water Engineers, Inc. and Denver Regional Council of Governments,19991999Zhu, X.X. and A.R. Simpson,1996122822829Houcque, D.,20052005