Survey Design and Survey Sampling
Gleaning accurate information about who is traveling on the transportation system and for what purpose is critical to all transportation planning and investment. Survey design is about asking the right questions, and survey sampling involves directing those questions toward the right people. We are a recognized leader in the development and design of transportation surveys, including the design and use of stated- and revealed-preference surveys and the development of sampling plans. Our practice is built on a foundation of the use of survey data to develop model applications, including discrete choice model estimation and statistical analysis. In recent years, we have increasingly applied these skills to traffic and revenue studies and the identification of strategies for increasing regional transit ridership.