Modeling side stop behavior during long distance travel using the 1995 American Travel Survey (ATS)
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This paper examines how many and the most common type of side stops a traveler or travel party makes during long-distance travel of over 100 miles or more. The research uses the 1995 American Travel Survey (ATS) because it is one of the few data sources that collects information on stops and side trips for long-distance trips. The paper utilizes two models to estimate side stop behavior: 1) an ordered probit formulation for modeling the number of side trips during long distance travel, and 2) a mixed multinomial logit formulation for modeling the most common side stop purpose during long-distance travel. A variety of variables, including trip and household characteristics, are considered in the model specification. The factors that play the largest role in determining side stop behavior are the primary purpose of the long-distance trip, whether the trip is a planned vacation or not, and the ethnicity of the travelers.