Evaluating the safety benefit of retrofitting motorways section with barriers meeting a new EU standard : Comparison of observational before–after methodologies
The road safety barriers are today designed and installed in compliance with the European standards for Road Restraint Systems (EN 1317), which lays down common requirements for the testing and certification in all EU countries. The introduction of the European Union (EU) regulation for safety barriers, which is based on performance, has encouraged European road agencies to perform an upgrade of t