I'm doing an analysis of bicycle route choice and have GPS tracks for about 3600 trips in csv format. I can add them to ArcMap and create lines no problem, but they of course do not follow the actual road. I've searched many forums and cannot find a solution that works or that I can understand. What's the simplest way to take my csv files and snap them to an existing road centerline? My knowledge of programming is severely limited so if that is necessary, please be as descriptive as possible.