Study on Traffic Accident Risk Arising from Driving Workload Overload in Complex Environments

This study investigates highway safety by analyzing how flat curve radius affects driver response on mountain roads. Using data from 97 drivers (steering angle, speed, acceleration), results show maneuver difficulty increases on small-radius curves but decreases on large-radius ones. The entropy weighting method determined evaluation index weights, constructing a driver adaptability coefficient function. Linear relationships between curve radius and coefficients were established, along with regression equations for specific ranges. The findings reveal how driving proficiency impacts load capacity and adjustment mechanisms, providing a basis for further research on driving load, accident-prone sections, and traffic safety improvements.