| 摘要 |
A flashing beacon 10 for a level crossing in particular and to be mounted on a roadway sign 5 includes a signal unit 12 with front 20, rear 22, and end faces 24, 25, and light units 30 mounted on to the front and rear faces and at least one of the end faces of the signal unit. The beacon is also provided with a light bar (see fig 9 of the specification) with a plurality of lights and which is positioned remote from the faces of the signal unit. The light units and light bar are controlled by an electronic controller (14 not shown but see Fig 3) powered by a solar collector 16 and in response to an activation unit 18 in communication with the controller. The light units may be controlled to operate in a so called wig-wag pattern in which two light units flash on and off periodically but with different periods. |
