LEDs are Robust
LEDs are solid state devices containing no moving parts and no filaments to burn out. As such LEDs handle tough environments including heavy vibration and impact. There is nothing to break, rupture, shatter, leak or contaminate. This solid state nature of LEDs makes them extremely rugged and durable and therefore an ideal solution for applications where reliability is paramount.
Cold start is not a problem with LEDs suitable for ambient temperatures down to -40ºC, simplifying design and reducing costs for these specific applications. Unlike many light sources in use today which are not well suited to cold environments, with some even requiring special drivers to enable ignition.