A paper titled “Accident Prediction Modelling: a literature review” authored by Tassos Dragomanovits, George Yannis, Alexandra Laiou, Francesca La Torre, Lorenzo Domenichini, Thomas Richter, Stephan Ruhl, Daniel Graham, and Niovi Karathodorou, is now published in the themed issue on transport safety and assessment of the Proceedings of ICE – Transport. This paper presents a comprehensive literature review on road traffic Accident Prediction Models (APMs) and Crash Modification Factors (CMFs). The focus is on motorways and higher ranked rural roads and the study was performed within the PRACT research project carried out for the European Road Authorities Organistion (CEDR). The review of CMFs focused on their background and development, the various methods for developing them and the key issues in their application. The review resulted in the development of an online APM and CMF Repository, with the aim of assisting the practical application of gathered experience on accident prediction.