Impact of Driver-to-Driver Communication on Driving Anger and Aggressive Driving Behavior

Aggressive driving is a leading cause of roadway fatalities. Extensive research has examined the link between driving anger and aggression, as well as various interventions designed to ease driving anger behind the wheel, such as selecting specific types of music, adjusting ambient temperature, and using certain lighting color schemes. Often, aggressive driving stems from the frustration caused by the inability to clearly express intentions or emotions. Most studies have focused on reducing anger after it has already manifested, with fewer efforts exploring preventative measures like communication to foster cooperation and empathy which could address the root cause of driving anger. Through this dissertation work, I propose a novel solution: a Driver-to-Driver (D2D) communication system that allows drivers to exchange short messages in common driving scenarios, helping to minimize or prevent anger before it escalates into aggression. Studies were conducted to assess the effectiveness of this system by measuring physiological response, driving performance, and subjective feedback. The results indicate that the system is well accepted by drivers and effectively reduces aggressive driving behaviors. The system’s impact on reducing driving anger is evident. Additional research is needed to explore this aspect more thoroughly. This study provides valuable insights into how D2D communication systems can enhance roadway safety.