Cite
APA Citation
Camden, A., Buliung, R., Rothman, L., Macarthur, C., & Howard, A. (2012). the impact of pedestrian countdown signals on pedestrian–motor vehicle collisions: a quasi-experimental study. Injury prevention, 18(4), 210–215. http://access.bl.uk/ark:/81055/vdc_100137787157.0x000019