1. TRACTOR OPERATOR ROLL ANGLE ASSESSMENT AND VISUAL SLOPE INDICATOR EFFECTIVENESS Open Access Author: Tillapaugh, James Adam Title: TRACTOR OPERATOR ROLL ANGLE ASSESSMENT AND VISUAL SLOPE INDICATOR EFFECTIVENESS Graduate Program: Agricultural and Biological Engineering Keywords: slope angle perceptionvisual slope indicatortractor overturnfarm safetytractor cab roll simulator File: Download JamesTillapaugh_jat355_thesis.pdf Committee Members: Dr Dennis Murphy, Thesis Advisor/Co-AdvisorDennis J Murphy, Thesis Advisor/Co-AdvisorHenry Joseph Sommer Iii, Thesis Advisor/Co-AdvisorJude Liu, Thesis Advisor/Co-Advisor