| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lighting control system for a tunnel capable of assuring the visibility of a falling object on a road in a tunnel and the visibility of a leading vehicle based on an accumulated presence probability and the reflectivity of the object. <P>SOLUTION: The lighting control system for a tunnel comprises at least an input 1, a storage 2, a calculation part 3, a control unit 4, and a luminaire 5. The relationship between the reflectivity and accumulated presence probability of an obstacle on the road, required vertical illuminance for assuring the visibility of a leading vehicle from a vehicle running in the tunnel, and the required total visibility of the obstacle in the tunnel are set by an input from an input 1 to calculate road surface brightness for assuring the prescribed visibility of the obstacle in the tunnel. The control unit 4 controls the output of the luminaire 5 to attain the road surface brightness and the required vertical illuminance. Thus, a vehicle running in the tunnel 9 can fully visually recognize the hazardous obstacle on the road and a leading vehicle in the tunnel 9. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
