TREDIS (Transportation Economic Development Impact System) is a web-based benefit-cost-analysis tool for transportation projects. TREDIS uniquely addresses every mode of passenger and freight transportation — from highway to rail to intermodal terminals and facilities. TREDIS is highly detailed in its representation of both passenger and freight costs and benefits, including the value of improving transportation reliability, market accessibility, and system connectivity. How will TREDIS empower you to tell your transportation story?