Effect of Color Temperature of Light Source in Tunnel on Driving Safety Based on Virtual Reality Technology

Abstract:

An intelligent decision-making system for the environment in road tunnel was established based on virtual reality （VR） technology. Driving simulation experiments were carried out at different color temperatures to establish a measurement model between the growth rate of attention and the color temperature of light source， and the distribution of reaction time was given. The results show that at the entrance and exit of the tunnel， drivers’ attention growth rate is higher and drivers’ attention reaches the lowest level after driving about 1 200 m. The color temperature of different light sources has a significant difference in the effect on drivers’ attention. The color temperature of 6 300 K is the best for the concentration of attention resources. Under low color temperature （2 000?4 000 K）， the driver’s reaction time to the accident is about 0.78 s， while under medium and high color temperature （5 000?8 000 K）， the driver’s reaction time to the accident is about 0.58 s.