Changing Sign System

A changing sign system for use as variable speed limit sign on roadways including: a display panel; 5 a central numeric displaying area formed on the display panel by a plurality of light emitting structures which when activated can display a selected one of at least two possible speed limit displays, each of the at least two possible speed limit displays corresponding to a respective speed limit of at least two possible speed limits, the at least two possible speed limits including a normal speed limit; 10 an annulus formed by a plurality of outer circles on the display panel around the central numeric displaying area by a plurality of light emitting structures; a control means for selecting the selected speed limit display from the at least two possible speed limit displays according to an input criterion and for varying part of one or more of the display panel, the central numeric displaying area or the annulus to 15 display the selected one of the at least two possible speed limit displays; wherein the sign system fulfils the criteria of being a speed display sign by always showing a number in a circle on the display panel, when the system is in use, with the circle being illuminated by the light emitting structures of the annulus, while being able to indicate a selected one of the at least two possible speed limits and while 20 simultaneously indicating a change of speed limits when a speed limit different to the normal speed limit is displayed on the a central numeric displaying area, and therefore a change in conditions, by the varying of part of one or more of the display panel, the central numeric displaying area or the annulus.