Speed Signs
With built in speed detector and digital display, it can show the speed of a vehicle and flash the speed in red or show an asterisk or a sad face when a the pre set speed limit is exceeded. It can also show a smiley face when the vehicle is under the speed limit.
Speed Signs can be fixed and portable with variable speed limits and can operate on large batteries topped up by solar panels.
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Wig Wag Signs
Are most common at level crossings and fire/ambulance stations to stop the traffic for emergency vehicles to exit the station. They are also used on bridges or tunnels. They are a very useful sign especially in factories where the clutter of other signs may mean a red traffic light goes unnoticed and you need to stop all traffic while a vehicle has to emerge or reverse out of a blind factory workshop door into a main carriage way. The driver of the vehicle can carry a radio remote control to switch on the light when he is ready to reverse and switch it off once he is in the carriage way and moving off safely.
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Flashing Amber Lights
These are usually a warning sign for a school crossing patrol or where men are working in or close to a roadway they are also used on automatic machinery such as moving gates or barriers they can also be used with sounders when a piece of automatic equipment needs attention and needs to be interfaced with other detection equipment e.g. a boiler may be over pressure or a fuel or chemical process is leaking and a warning needs to kick in automatically.
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