This research aimed to test the effect of an automated system of bus docking on drivers' mental workload. Reduced workload is thought to be brought about by aiding the driver to maneuver, as he/she is required only to monitor proper functioning of the system. However, the true impact of the system on drivers must be studied to ensure good acceptance and minimal distraction from traffic. Workload was estimated by recording of electrodermal activity while drivers tested 5 scenarios involving the docking system. Results show that docking precision was improved when the system was used. When drivers monitored the functioning of the system, their workload was higher than that observed during manual docking; however, reduced workload was evidenced after a learning process. The docking system was also shown to increase workload in the event of dysfunction, especially when drivers had to take over control. Despite this particular situation, and after habituation, such a system could be integrated into buses to improve safety during boarding and egress.
Abstract