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Acknowledgements The multimodal level of service analysis method was developed under National Cooperative Highway Research Program (NCHRP) project 3-70, Multimodal Level of Service for Urban Streets. It is the result of the contributions many researchers. Dr. Aimee Flannery of George Mason University, and Dr. Nagui Rouphail of the North Carolina State University developed the recommended auto level of service model. Dr. Flannery developed the auto video clips and conducted the auto, bicycle, and pedestrian video laboratories around the United States. Dr. Flannery developed the linear and non-linear regression models and conducted the initial statistical analysis for the auto LOS models. Dr. Kathryn Wochinger assisted in the design of the video laboratory survey instruments and protocol. Dr. Rouphail and Laureano Rangel led the statistical development of the ordered logistic auto LOS model. Mr. Paul Ryus of Kittelson Associates developed the transit LOS model and conducted the phase 1 transit data collection effort. Mr. David Reinke of Dowling Associates led the phase 2 transit data collection effort and performed various statistical analyses in support of the auto and transit model developments. Mr. Chris Ferrell of Dowling Associates updated the literature review. Mr. Bruce Landis, Mr. Theo Petritsch, and Dr. Herman Huang of Sprinkle Consulting, Inc., developed the pedestrian and bicycle LOS models and performed the statistical analyses associated with that effort. They also shot the video clips for the bicycle and pedestrian portions of the video laboratories. Mr. Mark Vandehey of Kittelson Associates, and Dr. James Bonneson of Texas A& M coordinated the subject research with the on-going NCHRP 3-79 project and provided Highway Capacity Committee perspectives on the research. The research work that led to this users guide was sponsored by the American Association of State Highway and Transportation Officials, in cooperation with the Federal Highway Administration, and was conducted in the National Cooperative Highway Research Program, which is administered by the Transportation Research Board of the National Academies. The opinions and conclusions expressed or implied in the report are those of Dowling Associates, Incorporated. They are not necessarily those of the Transportation Research Board, the National Academies, or the program sponsors. The enclosed Users Guide is a draft being circulated to local agencies for testing and evaluation. We would appreciate hearing about your experiences using the multimodal LOS method and any advice you might have on how to improve its utility for local and state agencies operating urban streets. We would also appreciate any suggestions you might have on how this users guide might be improved. Please send your comments to nchrp370@dowlinginc.com. Richard Dowling Oakland, Ca February 2008
