Editing Light-emitting diode (section)

===Indicators and signs===
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The [[energy conservation|low energy consumption]], low maintenance and small size of LEDs has led to uses as status indicators and displays on a variety of equipment and installations. Large-area [[LED display]]s are used as stadium displays, dynamic decorative displays, and [[dynamic message sign]]s on freeways. Thin, lightweight message displays are used at airports and railway stations, and as [[Destination sign|destination displays]] for trains, buses, trams, and ferries.

[[File:Red and green traffic signals, Stamford Road, Singapore - 20111210.jpg|thumb|upright|Red and green LED traffic signals]]

One-color light is well suited for [[traffic light]]s and signals, [[exit sign]]s, [[emergency vehicle lighting]], ships' navigation lights, and [[Christmas lighting technology#LEDs|LED-based Christmas lights]]

Because of their long life, fast switching times, and visibility in broad daylight due to their high output and focus, LEDs have been used in automotive brake lights and turn signals. The use in brakes improves safety, due to a great reduction in the time needed to light fully, or faster rise time, about 0.1 second faster{{citation needed|date=April 2016}} than an incandescent bulb. This gives drivers behind more time to react. In a dual intensity circuit (rear markers and brakes) if the LEDs are not pulsed at a fast enough frequency, they can create a [[flicker fusion threshold#Visual phenomena|phantom array]], where ghost images of the LED appear if the eyes quickly scan across the array. White LED headlamps are beginning to appear. Using LEDs has styling advantages because LEDs can form much thinner lights than incandescent lamps with [[parabolic reflector]]s.

Due to the relative cheapness of low output LEDs, they are also used in many temporary uses such as [[glowstick]]s and throwies. Artists have also used LEDs for [[LED art]].