| 摘要 |
An optical and acoustic signaling arrangement applicable to accesses to garages, parking lots and similar facilities consisting of a vertical signal (1) and three horizontal signals (8), (8') and (9), the horizontal signal having an acoustic warning device on the upper part of a horizontal arm, incorporating two intermittent optical warning devices (7), and having transversal bands (8) and (8'), the intermittent lights (7) being located on the bands (8) and (8') or on bollards (9). |
