Urban Road Traffic Visual Environment Reliability Evaluation Based on Amount of Information Perceived by Drivers' Central Vision

A well-designed urban traffic system should be safe and efficient, which can provide drivers with rhythmic driving experience. Under this circumstance, drivers could achieve a balance between relaxation and tension. For one thing, drivers can keep alert and drive vehicles unhurriedly in case of generating distraction due to excessive relaxation. For another, they have enough time to discover and handle any potential events in case that too much nervousness will result in fatigue. Hence it can decrease the probability of the occurrence of drivers' distraction and fatigue behaviour. Rhythmic driving means that there is a sense of rhythm during the driving process, which is mainly reflected from operating speed. Although many factors may affect the driving speed, studies have shown that drivers' control of speed is closely related to the information they perceive, especially the visual information that needs to be processed. If the information is complicated and numerous, it will lead to emotional stress, heavy workload and fatigue, so sometimes drivers have to slow down to increase the time for processing information. On the other hand, if the information is fairly simple to process, drivers are likely to spare little time on it. On this condition, drivers may produce distraction behaviour and raise their speed unconsciously. Therefore, as a kind of active safety technology, the urban traffic system should provide precise information with a proper amount to ensure traffic relatively high security, so that drivers are neither prone to distraction nor easy to generate fatigue. In this paper, after calculating drivers' central visual amount of information under urban traffic environment, the authors understand the close correlation between rhythmic driving and visual amount of information drivers have to handle. Research finds out that if the gradient of visual amount of information is too large, drivers will be liable to feel fatigue and stressed, but if this gradient is too small, drivers will be distracted easily. Based on these results, a method is proposed that uses gradient of visual amount of information to analyze the reliability of urban road traffic visual environment.

Language

  • English

Media Info

  • Media Type: Digital/other
  • Features: Figures; Illustrations; Photos; References; Tables;
  • Pagination: 13p
  • Monograph Title: Proceedings of the 25th World Road Congress - Seoul 2015: Roads and Mobility - Creating New Value from Transport

Subject/Index Terms

Filing Info

  • Accession Number: 01713815
  • Record Type: Publication
  • ISBN: 9782840604235
  • Files: TRIS
  • Created Date: Jul 5 2019 11:20AM