?url_ver=Z39.88-2004&rft_id=10.5204%2Fthesis.eprints.238367&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=Before-after+safety+evaluation+of+engineering+treatments+applying+econometric+models+for+unobserved+heterogeneity&rft.creator=Tahir%2C+Hassan+Bin&rft.subject=Engineering+Treatment+Evaluation&rft.subject=Before-after+study&rft.subject=Simulation-based+Empirical+Bayes+approach&rft.subject=Full+Bayes+approach&rft.subject=Unobserved+Heterogeneity&rft.subject=Random+parameters+negative+binomial+model&rft.subject=random+parameters+Poisson+lognormal-Lindley+model&rft.subject=Single-vehicle+crashes&rft.subject=multi-vehicle+crashes&rft.subject=Wide+centreline+treatment&rft.description=This+PhD+thesis+aimed+to+develop+a+comprehensive+analytical+framework+for+the+before-after+treatment+evaluation+utilising+econometric+models+that+address+unobserved+heterogeneity.+This+research+had+four+objectives%3A+(i)+investigate+the+influence+of+different+segmentation+approaches+on+safety+effectiveness+of+engineering+treatments%2C+(ii)+propose+a+framework+that+considers+unobserved+heterogeneity+in+the+Empirical+Bayes+approach%2C+(iii)+examine+the+performance+of+various+engineering+treatment+evaluation+techniques+using+a+hypothetical+and+actual+treatment+setup%2C+and+(iv)+propose+a+framework+that+estimates+multiple+crash+types+simultaneously+while+accounting+for+correlations%2C+unobserved+heterogeneity%2C+and+preponderance+of+zeros+to+evaluate+a+highway+system.&rft.publisher=Queensland+University+of+Technology&rft.date=2023-03-02&rft.type=Thesis&rft.format=application%2Fpdf&rft.relation=https%3A%2F%2Feprints.qut.edu.au%2F238367%2F1%2FHassan%252BBin%252BTahir%252BThesis%25282%2529.pdf&rft.rights=free_to_read&rft.rights=http%3A%2F%2Fcreativecommons.org%2Flicenses%2Fby-nc-nd%2F4.0%2F&rft.relation=doi%3A10.5204%2Fthesis.eprints.238367&rft.relation=Tahir%2C+Hassan+Bin+(2023)+Before-after+safety+evaluation+of+engineering+treatments+applying+econometric+models+for+unobserved+heterogeneity.+PhD+thesis%2C+Queensland+University+of+Technology.&rft.id_number=https%3A%2F%2Feprints.qut.edu.au%2F238367%2F&rft.identifier=Faculty+of+Engineering%3B+School+of+Civil+%26+Environmental+Engineering