In a London, Ontario study, aside from living close to school, the presence of street trees and living in a mixed land-use neighborhood were the only other physical environment features that significantly correlated with more children walking and biking to school.
Larsen, Kristian, Jason Gilliland, Paul Hess, Patricia Tucker, Jennifer Irwin, and Meizi He. “The Influence of the Physical Environment and Sociodemographic Characteristics on Children’s Mode of Travel to and From School.” American Journal of Public Health 99, no. 3 (2009): 520–26. https://doi.org/10.2105/ajph.2008.135319.