INTEGRATING ROAD SAFETY INDICATORS INTO PERFORMANCE ROAD SAFETY INDEX

This study suggest a set of steps of combining different indicators to form a single index which may become a significant measurement in comparing, ranking and detennining road safety levels in different countries and however, to create a valuable road safety performance index in terms of communication, benchmarking, policy making and monitoring. Many composite (multidimensional) indices have been developed internationally and used in different aspects of life to indicate a progress or achievements between countries. They cover environmental issues, sustainable development, globalization issues, agriculture, economy, information technology, and more. Taking the specific road safety case into account, this study describes the different steps that are essential in the construction of a road safety performance index. The selection of indicators and data preparation are described, the issue of weighting and aggregating indicators is discoursed and the degrees of the index in terms of ranking of the countries assessed. These steps are illustrated by two weighting methods of simple average and based on theories using performance indicator data for ten African countries.