Abstract In order to study the characteristics of driver′ s light-dark adaptation at tunnel entrance/exit sections and the influence of shading shed on the adaptation process, this paper is based on the Zijing tunnel (without shading shed) and Balangshan tunnel (with shading shed) to conduct real vehicle driving tests, in which the distribution law of light-dark adaptation and the buffering effect of the shading shed on the light-dark adaptation process at tunnel entrance/exit sections are analyzed by taking the driver′s pupil diameter and the variation rate of pupil diameter as evaluating indicators. The study results show that over 90% of the dark adaptation process and over 54.61% of the light adaptation process occur inside the tunnel; during the dark adaptation at the tunnel entrance section, the maximum pupil diameter change rate decreases by 4.84% when the time passing through the shading shed is 2 seconds and by 33.58% when the time passing through the shading shed is 5 seconds; during the light adaptation at the tunnel exit section, the maximum pupil diameter change rate decreases by 38.75% when the time passing through the shading shed is 2 seconds and by 49.97% when the time passing through the shading shed is 5 seconds.
Abstract：
In order to study the characteristics of driver′ s light-dark adaptation at tunnel entrance/exit sections and the influence of shading shed on the adaptation process, this paper is based on the Zijing tunnel (without shading shed) and Balangshan tunnel (with shading shed) to conduct real vehicle driving tests, in which the distribution law of light-dark adaptation and the buffering effect of the shading shed on the light-dark adaptation process at tunnel entrance/exit sections are analyzed by taking the driver′s pupil diameter and the variation rate of pupil diameter as evaluating indicators. The study results show that over 90% of the dark adaptation process and over 54.61% of the light adaptation process occur inside the tunnel; during the dark adaptation at the tunnel entrance section, the maximum pupil diameter change rate decreases by 4.84% when the time passing through the shading shed is 2 seconds and by 33.58% when the time passing through the shading shed is 5 seconds; during the light adaptation at the tunnel exit section, the maximum pupil diameter change rate decreases by 38.75% when the time passing through the shading shed is 2 seconds and by 49.97% when the time passing through the shading shed is 5 seconds.
.On Influence of the Shading Shed on the Driver′s Light-dark Adaptation at Tunnel Entrances and Exits[J] MODERN TUNNELLING TECHNOLOGY, 2022,V59(1): 111-117
2022, Vol. 59 