1. Identification of Critical Issues Involving School Bus Safety;Appachu,1999
2. Hur säker är bussen? Skador och risker i samband med bussresor i tätort. Bus safety; Pedestrian; Pedestrian safety; Crash analysis;Berntman,2012
3. City of Phoenix Street Transportation Department, n.d. Phoenix School Crossing Safety Audit Procedure.
4. Special Report 269: The Relative Risks of School Travel;Committee on School Transportation Safety,2002
5. Seasons;Convers,2011