Application of Chaos Theory inHazardous Material Transportation

Risk factors are generally defined and assigned to road networks, as constant measures in hazmat routing problems. Infact, they may be dynamic variables depending on traffic volume, weather and road condition, and drivers’ behavior.In this research work, risk factors are defined as dynamic variables using the concept of chaos theory. The largest Lyapunovexponent is utilized to determine the presence of chaos for road accident rates. Risk factors with the property ofchaotic behavior are considered to solve hazmat routing problem using a developed mathematical model. Evaluationprocess has been done based on travel distance which mainly represents travel cost, as well as results show that theapplication of chaos to define dynamic risk factor is an appropriate method to solve hazmat routing problem, comparingto constant measures of risks.