Lighting for road tunnels: The influence of CCT of light sources on reaction time

Bo Liang; Shiyong He; Leena Tahkamo; Eino Tetri; Lulu Cui; Rajendra Dangol; Liisa Halonen

doi:10.1016/j.displa.2019.101931

Lighting for road tunnels: The influence of CCT of light sources on reaction time

Bo Liang, Shiyong He^*, Leena Tahkamo, Eino Tetri, Lulu Cui, Rajendra Dangol, Liisa Halonen

^*Corresponding author for this work

Department of Electrical Engineering and Automation

Shanghai Jiao Tong University

Research output: Contribution to journal › Article › Scientific › peer-review

170 Downloads (Pure)

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	https://doi.org/10.1016/j.displa.2019.101931
Publication status	Published - Jan 2020
MoE publication type	A1 Journal article-refereed

Keywords

Tunnel lighting
Traffic safety
Visual performance
Reaction time
CCT

Access to Document

10.1016/j.displa.2019.101931

ELEC_Liang_Lighting-for-Road-Tunnels_Displays_61_2020_finalacceptedmanuscriptAccepted author manuscript, 1.16 MBLicence: CC BY-NC-ND

Cite this

@article{9ccb0bc026324d2e9b1a5e1a4850e512,

title = "Lighting for road tunnels: The influence of CCT of light sources on reaction time",

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.",

keywords = "Tunnel lighting, Traffic safety, Visual performance, Reaction time, CCT",

author = "Bo Liang and Shiyong He and Leena Tahkamo and Eino Tetri and Lulu Cui and Rajendra Dangol and Liisa Halonen",

year = "2020",

month = jan,

doi = "10.1016/j.displa.2019.101931",

language = "English",

volume = "61",

journal = "Displays",

issn = "0141-9382",

publisher = "Elsevier",

}

TY - JOUR

T1 - Lighting for road tunnels

T2 - The influence of CCT of light sources on reaction time

AU - Liang, Bo

AU - He, Shiyong

AU - Tahkamo, Leena

AU - Tetri, Eino

AU - Cui, Lulu

AU - Dangol, Rajendra

AU - Halonen, Liisa

PY - 2020/1

Y1 - 2020/1

N2 - 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.

AB - 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.

KW - Tunnel lighting

KW - Traffic safety

KW - Visual performance

KW - Reaction time

KW - CCT

U2 - 10.1016/j.displa.2019.101931

DO - 10.1016/j.displa.2019.101931

M3 - Article

SN - 0141-9382

VL - 61

JO - Displays

JF - Displays

M1 - 101931

ER -

Lighting for road tunnels: The influence of CCT of light sources on reaction time

Abstract

Keywords

Access to Document

Fingerprint

Cite this