To ensure that the driving environment generated by the simulation software was similar to that of the actual highway, a two-way four-lane highway scenario was selected for the simulated driving experiment in this paper. The whole road section was composed of straight road sections, with a total length of 40 km and a single lane width of 3.75 m. The scene that we designed in the simulated driving experiment was similar to the highway scene on the actual road. The road surface was smooth and open, without interference from pedestrians and other vehicles. There was no water, gravel, or other obstacles on the road surface, and there was no interference from buildings, bushes, pedestrians, or others on both sides of the road. Trees and grass on both sides of the road were added at regular intervals. This segment was repeated throughout the experiment until the end.
It was required that the subjects experienced no sleep disturbance, and, meanwhile, they were to ensure sufficient and regular sleep in the three days before the experiment. The degree of myopia of the experimenters did not exceed 600 degrees. The simulated driving test time was 9:00–11:00 in the morning. During the experiment, three experimental assistants were required. Before the simulated driving test began, the test assistants debugged the equipment. During the experiment, the subjects were required to wear eye trackers and drive in a single lane at a speed of 120 km/h for 20 min. Any problems during this process could be reported to the experimental assistants. A special experimental assistant was in charge of recording and observing the changes in the driver’s ECG in real time. They observed the driver’s external performance state when the driver’s ECG characteristics were stable. When the driver appeared in a state in which they might wake up from road hypnosis, the experimental assistant asked the driver whether the state occurred and recorded it. After the driving process was over, the subjects took off the eye tracker and rested for ten minutes, and the experimental assistants checked and debugged the equipment. During this period, an experimental assistant asked the subjects whether they had fatigue, distraction, and other behaviors during the driving process they had experienced and recorded them. Combining the whole video and the eye movement information video of the driver during the experiment, at the time point when road hypnosis may have appeared during the driving process, the driver was asked whether the road hypnosis occurred and it was recorded. After the break, the subjects wore eye trackers and kept driving in a single lane at a speed of 120 km/h. The driving time was 40 min under the condition without talking to other people. This process was consistent with the experimental process performed previously. After the simulated driving was completed, the experimental assistants organized the equipment and ended the experiment.
It was required that the subjects experienced no sleep disturbance, and, meanwhile, they were to ensure sufficient and regular sleep in the three days before the experiment. The degree of myopia of the experimenters did not exceed 600 degrees. The simulated driving test time was 9:00–11:00 in the morning. During the experiment, three experimental assistants were required. Before the simulated driving test began, the test assistants debugged the equipment. During the experiment, the subjects were required to wear eye trackers and drive in a single lane at a speed of 120 km/h for 20 min. Any problems during this process could be reported to the experimental assistants. A special experimental assistant was in charge of recording and observing the changes in the driver’s ECG in real time. They observed the driver’s external performance state when the driver’s ECG characteristics were stable. When the driver appeared in a state in which they might wake up from road hypnosis, the experimental assistant asked the driver whether the state occurred and recorded it. After the driving process was over, the subjects took off the eye tracker and rested for ten minutes, and the experimental assistants checked and debugged the equipment. During this period, an experimental assistant asked the subjects whether they had fatigue, distraction, and other behaviors during the driving process they had experienced and recorded them. Combining the whole video and the eye movement information video of the driver during the experiment, at the time point when road hypnosis may have appeared during the driving process, the driver was asked whether the road hypnosis occurred and it was recorded. After the break, the subjects wore eye trackers and kept driving in a single lane at a speed of 120 km/h. The driving time was 40 min under the condition without talking to other people. This process was consistent with the experimental process performed previously. After the simulated driving was completed, the experimental assistants organized the equipment and ended the experiment.
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