1. AAA Foundation for Traffic Safety. (2014). Pedestrian fatalities on Interstate highways, United States, 1993–2012. Retrieved from https://aaafoundation.org/wp-content/uploads/2017/12/PedestrianFatalitiesonInterstatesReport.pdf.
2. Anderson, J. R., Hardy, E. E., Roach, J. T., & Witmer, R. E. (1976). A land use and land cover classification system for use with remote sensor data (U. S. Geological Survey Professional Paper 964). Washington, DC: Department of Interior. Retrieved from https://pubs.usgs.gov/pp/0964/report.pdf.
3. Campbell, B. J., Zegeer, C. V., Huang, H. H., & Cynecki, M. J. (2004). A review of pedestrian safety research in the United States and abroad (Report No. FHWA-RD-03-042). Washington, DC: Federal Highway Administration. Retrieved from https://www.fhwa.dot.gov/publications/research/safety/pedbike/03042/03042.pdf.
4. CBS Broadcasting Inc. (2019). No service here: emergency roadside call boxes to disappear from freeways [News article, CBS Sacramento]. Retrieved from https://sacramento.cbslocal.com/2019/01/24/emergency-roadside-call-boxes/.
5. Spatial analysis of the association of alcohol outlets and alcohol-related pedestrian/bicyclist injuries in New York City;DiMaggio;Injury Epidemiology,2016