TRB has released Transportation Research Circular E-C113, Artificial Intelligence in Transportation: Information for Application includes six articles that explore five general artificial intelligence (AI) areas including knowledge-based systems, neural networks, fuzzy sets, genetic algorithms, and agent-based models. The circular is designed to serve as an informational resource for transportation practitioners and managers with respect to AI tools within these general areas. Each article details the types of problems to which the paradigm is best suited, its strengths and weaknesses, example applications, and guidelines for its application.