Safety Effects of Geometric Design Consistency on Two-lane Rural Highways: The Case of Ethiopia

Different studies conducted, regarding the development of statistical models used to predict crash occurrences along two-lane rural highways, around globe and particularly in Ethiopia, rely on geometric characteristics than explicitly considering measures design consistencies. Recently, issue consistency highway is emerging as an important criterion. This study therefore carried out evaluate horizontal alignments using develop safety functions that exclusively include measures. Elements all road sections considered were rated good, fair or poor evaluation criteria. Poisson regression Negative Binomial modeling approaches assess relationship between safety. Using information criteria goodness-of-fit, model was found better fit data NB models. Three different prediction which incorporate successfully developed. The can be crashes having similar with under this study. Finally, based results research, further detailed effect current guides related speed selection account for revision recommended.