title: Safety impact of engineering treatments on undivided rural roads.
abstract: This article presents an evaluation of the safety impacts of four engineering treatments implemented in the Autonomous Community of Madrid (Spain): highway upgrading; updating and improvement of traffic signing; repainting of pavement markings and pavement resurfacings. This evaluation was carried out using the Empirical Bayes method with a comparison group. The functioning of a methodology to test the significance of the safety impact is described. The results show that highway upgrading has a positive and significant safety impact, while the updating and improvement of traffic signing, the repainting of road markings and pavement resurfacings do not exhibit a significant impact on safety.
authors.affiliation: Universidade da Coruña, E.T.S.I. Caminos, Campus de Elviña, 15071 A Coruña, Spain. iperez@udc.es
authors.forename: I
authors.initials: I
authors.lastname: Pérez
mesh_terms: D000063:Accidents, Traffic / Q000517:prevention & control* / Q000706:statistics & numerical data; D001499:Bayes Theorem; D004779:Environment Design; D005069:Evaluation Studies as Topic; D006801:Humans; D008962:Models, Theoretical; D012424:Rural Population; D013030:Spain