| 摘要 |
A traffic warning method comprises: a, preparing a light-emitting apparatus which is provided with plural warning lights arranged in rows, and the number of the warning lights in a middle row is greater than that of the respective rows at both sides thereof in such a manner that the number of the warning lights gradually decreases from the middle row toward those at both sides; b, designating the warning lights in a first row with sequential numbers and connecting the warning lights of the first row to the warning lights in other rows by broken line to form a plurality of groups of warning lights; c, turning on and off the warning lights one group by one group and the corresponding warning lights in the middle row can present a traffic sign—an arrow which gradually moves in a left or right direction. |
