This R script (the below file titled *JTH_Atlanta_bike_infrastructure_c2016_Garber.R.*) accompanies an article under review in *Journal of Transport & Health* entitled **Comparing bicyclists who use smartphone apps to record rides with those who do not: implications for representativeness and selection bias**. The goal of this R script is to generate the geographical data representing the bicycle infrastructure present in Atlanta during Fall 2016, when the study took place. The code resolves conflicts and overlap between bicycle infrastructure data from two sources: the *Atlanta Regional Commission* and the *City of Atlanta*. It also includes some manual fixes based on on-the-ground checks and surveying. The code includes a line where the user may designate a working directory. Each data source (Atlanta Regional Commission and City of Atlanta, respectively) should have its own folder within that working directory. The user should also download the small Excel file entitled *COA_ARC_facility_type_look_up.xslx*. Once the data are saved in that structure, the code should run. Please feel free to email me at mdgarbe(at)emory(dot)edu with any questions or comments. Thank you for your interest.