It's hard not to underestimate the value of a lightbar LED flashing its warning. Without it, the vehicle itself would be liable to collision from other vehicles. We, the other road users would be in danger of being caught up in such a collision and pedestrians would not be aware of any problems they could run into. Any flashing light is seen as a warning and the lightbar LED is no exception to this rule. Lightbars tend to be used on all emergency vehicles and now military vehicles are opting to use them on some of their vehicles.
With the advent of the LED light, which has been with us for some time, the lighting output from a single bulb increased hugely. lightbar LED is incredibly bright, and you would be forgiven for thinking that the light output would drain the battery on the vehicle in no time. However, exactly the opposite is true, LED light bars use far less battery power than any other form of lighting. For this fact alone, it's easy to see why lightbar LED light units have become more and more popular.
LED stands for Light Emitting Diode, sounds pretty science fiction or Star Trek! In fact, LED lights were invented way back in the 1920's in Russia. They are then quite an age. The trouble with LED light bulbs is they were very expensive. With today's modern manufacturing processes and mass production, the price of lightbar LED units have fallen dramatically, which is another reason they have become the lighting to use on emergency vehicles. LED bulbs were not produced in many numbers until the late 1960's when Monsanto Corporation manufactured them and Hewlett-Packard used them in early calculators.
The LED lighting has come a long way.