Perceptual processes used by drivers during overtaking in a driving simulator.

Area of Science:

• Human Factors and Ergonomics
• Transportation Psychology
• Road Safety Research

Background:

• Overtaking maneuvers are complex driving tasks requiring accurate spatial and temporal judgments.
• Driver decision-making during overtaking is susceptible to perceptual and cognitive biases.
• Previous research indicates challenges in assessing oncoming vehicle proximity and maneuver feasibility.

Purpose of the Study:

• To investigate driver control strategies and decision-making processes during overtaking maneuvers.
• To identify factors influencing the safety and accuracy of overtaking decisions.
• To explore the impact of closing speed adaptation on overtaking behavior.

Main Methods:

• Utilized a fixed-base driving simulator to replicate real-world overtaking scenarios.
• Monitored driver control strategies and decision-making in response to oncoming vehicles.
• Analyzed the influence of adaptation to closing speed on maneuver initiation and execution.

Main Results:

• Drivers demonstrated frequent inaccuracies in judging overtaking safety relative to oncoming vehicles.
• Control strategies led to initiating overtakes when critical distance thresholds were exceeded but time was insufficient.
• Adaptation to closing speed significantly delayed decisions, increased risk-taking, and reduced decision consistency.

Conclusions:

• Driver control strategies and closing speed adaptation are critical factors in overtaking safety.
• Inaccurate risk assessment and delayed decision-making contribute to unsafe overtaking maneuvers.
• Findings support the development of enhanced driver training programs and advanced driver-assistance systems.