| 摘要 |
PROBLEM TO BE SOLVED: To overcome such a drawback that a driver of a succeeding automobile cannot know whether a preceding automobile runs at the maximum velocity among permissible velocities, runs at an intermediate velocity among the permissible velocities, or has stopped or parked.SOLUTION: Three indicator lamps are placed at positions at which they are discernible from a succeeding automobile. Namely, a left indicator lamp to be disposed on the left side in a width direction of a vehicle body, a center indicator lamp to be disposed in the center, and a right indicator lamp to be disposed on the right side are prepared. The indicator lamps to be lit are switched according to a state in which an automobile always runs at a saturation velocity, a state in which the automobile runs at an unsaturation velocity that falls below the saturation velocity, or a state in which the automobile has stopped or parked. Since a driver of the succeeding automobile can know the intention of a driver of a preceding automobile, safety is upgraded. |
