Fuzzy Logic Methodology for Accident Frequency Assessment in Hazardous Materials Transportation

摘要

The accident frequency is affected by numerous parameters describing the nature of the truck configuration, operation, environment, and road conditions, so the accident rate is different for different roads. In DPS accident database, various parameters that affect accident frequency are clearly recorded for every accident. Fuzzy TSK model is set up to get the basic accident rate under any condition for each road by considering every affecting parameter recorded in DPS accident database. Then fuzzy Mamdani model is applied to incorporate those parameters not included in DPS database. The overall modified accident number can then be divided by the shipment data to get the accident rate.