PHD Title: The Effects of Road Geometry And Posted Speed Limits on Driver Speed Selection

Brief Details: Jason Deller’s PhD thesis explores the complex relationship between roadway design and operating speeds, and how drivers respond to roadway design characteristics. The research aims to understand the impact of roadway geometry on driver speed selection, with a focus on urban roads with posted speed limits of 50km/h and 60km/h. The research program includes a driver simulator experiment and an observational study. The results suggest that driver speed selection is influenced by lane widths, posted speed limits, center line treatments, varying horizontal road curves, and other factors. The observational study confirms the findings from the driving simulator and shows that controlling elements in the complex real-world road corridor is difficult.