Analysis of trajectory transection rate on four-lane divided rural highway curves

Combining geometric features such as curve length, deflection angle, and approach tangent length provides a more comprehensive understanding of drivers' trajectory behavior, especially during passing maneuvers. The developed models can serve as a supplemental tool in geometric design to minimize lateral deviations and trajectory transitions across horizontal curves on four-lane divided highways. Passing maneuvers are riskier than through maneuvers, often involving lane changes and unpredictable paths. This highlights the need for roadway departure safety measures such as raised pavement markings, centerline rumble strips, and passing restrictions at specific curves.