The purpose of this project is to develop level-of-service estimation methods for shared use paths that overcome current limitations. The focus of this paper is on the collection of the perceptions of shared-use path users, and the development of a model relating those perceptions to operationl and path variables. Perceptions from 105 volunteers viewing 36 Videos of 10 locations was collected. A statistically sound model estimating LOS includes variables for path width, number of meeting and passing events, and presence of a center line.