1. Estimating the Safety Effects of Horizontal Curves on Pennsylvania Two-lane Rural Roads Open Access Author: Gooch, Jeffrey Paul Title: Estimating the Safety Effects of Horizontal Curves on Pennsylvania Two-lane Rural Roads Graduate Program: Civil Engineering Keywords: Highway safetytraffic safetyhorizontal curvespropensity scorespotential outcomesnegative binomialmixed effects File: Download Final_Thesis_Gooch.pdf Committee Members: Eric Todd Donnell, Thesis Advisor/Co-AdvisorVikash Varun Gayah, Thesis Advisor/Co-AdvisorMartin T Pietrucha, Thesis Advisor/Co-Advisor