The Florida Department of Transportation is in the process of developing a statistically estimated model of pedestrian quality of service for midblock street crossings as part of its Multimodal Quality of Service Program. This model is to be used in evaluating the level of service of street segments for pedestrian street crossing. The actual development of the model, including methodological issues explored, data collection, and model calibration and validation, is reported separately. A process was used to select potential determinants of perceived pedestrian quality of service for midblock street crossings. This process is structured and involves two steps. The first step involves the selection of a set of potential determinants through a theoretical analysis of pedestrian behavior for street crossing. The theoretical consideration ensures that these potential determinants have a sound behavioral foundation. The second step involves narrowing down this theoretical set through a practical analysis of planning needs and data requirements by an advisory committee. This practical consideration ensures that the final set of potential determinants and the model both are practically relevant.