| 摘要 |
A safety system for alerting roadside personnel to detected incursions by approaching vehicles into designated safe area or areas; the said system comprising: a plurality of traffic cones 14 or like traffic warning elements for defining a visible boundary along a roadside or carriageway boundary. Each cone or warning element has impact detecting means 10 for detecting an impact with an approaching vehicle, and signal generating means (40, 42, 44) for generating an alarm activating signal in response to a detected impact, and, alarm means (53, 60, 63) activated in response to the generation of an alarm activating signal. |
