Indoor playground runway lighting

The first set of runway Aile gym equipment system at the municipal airport in 1930, now known as International Airport started.
Now, compare the size of the airport will have a runway lighting system installed to allow the aircraft landing at night. In the air, watching the runway lighting system marked the outline of the runway. One has a runway lighting system will include a number of (some or all) parts:
Runway end Aile slide playground (Runway End Identification Light, referred REIL): one pair installed in the runway end (so each one) lighting systems. Bulbs can be unidirectional (facing approach aircraft) or flashing omnidirectional. When operational, about two bulbs will flash sync.