Masaya NISHIOKA

Perception of Time in Traffic Congestion and Driversf Cognition

Kiichiro HATOYAMA

From previous research, itfs considerable that driver may drive asleep or be careless due to monotonous follow-up driving, fatigue and boredom by imbalance between driving ability and driving task. Therefore, I considered that driversf perception time, stress or strain can be decrease, and it will connect to keep an attention level by imposing a secondary task on driver under congestion.
This research was aimed to clarify the influence on driver 's perceived time, mental work load, burden, attention level by giving secondary tasks to drivers under congestion. Moreover, it aimed to clarify the relationship between in-car activities under traffic jam and characteristics of driver and driving tendency. and to get a basic knowledge for psychological solution of traffic congestion.
First, I conducted an investigation of in-vehicle activity under traffic jam. Then, Itfs clarified that "presence of passenger" and "young driver" are dominantly influencing active activities under congestion.
As a result of experiments, secondary task "Do nothing" revealed that the perception time of young drivers was increased and attention level decreased with time. Furthermore, I found that "Music" and "Quiz" reduce the burden of drowsiness of the driver and the load on "seeing". In addition, in the secondary task "Quiz", it was found that there was a case that the response delay of a person having a reaction delay in the secondary task "music" was sometimes significantly reduced.
For this reason, I suggested that it should be positively introduce to drivers under congestion if the driver's attention is not degraded like the secondary question "Quiz" conducted in this research. Moreover, it was confirmed by this research that there was individual variation in response delay. Therefore, when developing products that can effectively utilize time even under traffic congestion, we think that it is desirable to consider the driversf character and driving trends.