In Situ Methodology for Studying State Driver Stress: A Between-Subjects Design Replication

Previous studies of driver stress have utilized in‐vehicle in situ questionnaires to measure driver stress during the actual commute. These studies demonstrated several important findings, but all adopted a repeated‐measures research design where each participant was exposed to counterbalanced high and low congestion conditions. This approach reduced between‐subjects variability but increased the possibility of demand characteristics. The...