The symbolic regression method was used in this study to establish the relationships among SRS, bike flows, physical settings of bike facilities, and traffic conditions. This method, first introduced by Koza (Koza, 1992), has recently been enhanced to be a strong deep learning method for social studies (Pan et al., 2019), financial analyses (Yang et al., 2015), medical applications (Bhardwaj and Tiwari, 2015, Hughes et al., 2020), biological and ecological assessment (Klotz et al., 2017),
