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The aim of the paper is to present the results of the road safety assessment for a 3,600 km section of the Greek Trans-European Transport Network (TEN-T Network) through a comprehensive example and to illustrate the way that these results should be taken into account when designing road maintenance or rehabilitation investment plans. The road risk assessment was conducted by applying the internationally recognized iRAP methodology, which has been implemented in more than 90 countries worldwide for the inspection of more than 650.000 Km of road networks. During this inspection, a specially equipped vehicle collected information from the road and the surroundings in 100m road sections. This information was then analysed to assess the infrastructure risk factors that influence the likelihood of a crash occurring and its severity, the risk level of road sections and award the Stars Performance of the road (Star Rating). On the basis of this analysis, the appropriate action plans were determined, in order to improve the road safety, which will maximize the benefit over spent cost of the planned investments. [ABSTRACT FROM AUTHOR]