Prediction of motorcyclist traffic crashes in Cartagena (Colombia): development of a safety performance functionHolman Ospina-Mateus, Leonardo Augusto Quintana Jiménez, Francisco J. Lopez-Valdes and Shib Sankar SanaRAIRO-Oper. Res., 55 3 (2021) 1257-1278DOI: https://doi.org/10.1051/ro/2021055