| 摘要 |
<p>An alarm device or devices, which when fitted to a travelling vehicle may warn the driver, by visual and audible alarm signals, of the distance of other vehicles located in front, and at the rear of the said vehicle. The device may be filled at the front, also the rear of the vehicle, to provide visual signals to all three drivers. It may incorporate single range, or combined range sensors set to predetermined distances, or zones, which may activate visual, and audible, alarm signals. These sensors may contain manual over-ride switched to allow them to be switched on, or off, to suit various driving conditions. The warning lights may be in different colours to identify the various distance zones. The audible alarm may be by buzzer, bell or bleeper, or alternatively, a pre-recorded audio tape, as an effective supplementary warning. <IMAGE></p> |
