Runway Edge Lighting
Threshold / End Lighting
Runway End Lighting
Outer Threshold Lighting
Intermediate Holding Position / Clearance Bar
Medium Intensity Lighting Applications
Medium intensity LED lightning products.
Medium intensity can be defined as a 3-stage lighting system suitable for non-instrument runways or non-precision approach runways. There are several applications and these are detailed below:
Runway Edge – Omni-directional
Lights are positioned along or just beyond the edges of the runway and are white subject to certain specific exceptions. These fixtures are either inset or elevated type.
Runway Edge – Bi-directional
Similar to that of the omni-direction in as the lights are positioned along the edge of the runway. However, there is no circular guidance aspect to these lights they can only be seen when in line with the runway. This type of fixture is inset into the pavement.
These are installed in a line along the landing threshold at the approach end of the runway. Green in colour they are only visible when on approach. These can either be elevated, or inset fixtures.
Runway End Lights
Red in colour they are installed in a line along the end of the runway available in use. They are red and can only be seen at either end of the runway. These can either be elevated, or inset fittings, and generally powered from the runway edge circuit
Runway threshold/end lights
This is a combination of the threshold and runway end lights in a single fixture. They are green in one direction, and red in the other direction.
Intermediate holding position
These can be provided at airports when there are intersecting taxiways without any taxiway guidance system. Holding positions, also referred to as clearance bars, may be established in order to protect a priority taxiway route ahead. For medium intensity requirements the fixtures are generally installed at the edge of the taxiway, on both sides of the holding position.
All the fixtures for this system are powered by 6.6amp circuit supplied by a constant current regulator. A simple control system can be used to operate the lighting, but it is common that this is linked to an ARCAL system so that the pilot can activate the lighting when on approach