Safety Impact of Engineering Treatments on Undivided Rural Roads

A crucial aspect of highway safety management is the evaluation of safety engineering treatments. The purpose of such evaluation is to estimate the safety impact of engineering treatments. The objective of this article was to evaluate the safety impacts that were implemented in the Autonomous Community of Madrid (Spain): highway upgrading, updating and improvement of traffic signing, repainting of pavement markings, and pavement resurfacings. The Empirical Bayes method (EBM) was used to conduct this evaluation with a comparison group. The EBM was used in conjunction with a statistical procedure to allow the verification of the signification of the safety impacts. The functioning of a methodology to test the significance of the safety impact is described. The results of this evaluation demonstrated that highway upgrading does have a positive and significant safety impact; however, the updating and improvement of traffic signing, the repainting of road markings and pavement resurfacings did not reveal any significant impact on safety.


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  • Accession Number: 01013397
  • Record Type: Publication
  • Files: TRIS, ATRI
  • Created Date: Dec 17 2005 5:45PM