Abstract
Drivers' visual performance is closely related to traffic safety in a real driving environment. In order to improve the traffic safety of road tunnel lighting, the effect of LED lighting on human visual performance was investigated using reaction time as a parameter. The experiment was performed with a scale model that can simulate a road tunnel lighting environment. Reaction times were measured under different values of luminance, correlated colour temperature (CCT), eccentricity, and contrast. The results show that visual performance can be improved by increasing the CCT of the light sources. The improvement of visual performance is greater in peripheral vision than that in foveal vision. The shortest reaction times were measured at a luminance level of 10 cd/m(2) and at a CCT of 5000 K. An appropriate luminance value with high CCT is recommended for tunnel lighting in interior and transition zones.
| Original language | English |
|---|---|
| Article number | 101931 |
| Number of pages | 8 |
| Journal | Displays |
| Volume | 61 |
| DOIs | |
| Publication status | Published - Jan 2020 |
| MoE publication type | A1 Journal article-refereed |
Funding
This research work was sponsored by the Project of the National Natural Science Foundation of China [Grant No. 51678096, 51878107], the Basic Research and Frontier Exploration Project of Chongqing (cstc2018jeyjAX0118), the Science and Technology Research Program of Chongqing Municipal Education Commission (KJQN201800734), the Open Funding of State Key Laboratory of Mountain Bridge and Tunnel Engineering (SKLBT-19-008).
Keywords
- Tunnel lighting
- Traffic safety
- Visual performance
- Reaction time
- CCT