Telecom tower obstruction lighting systems are designed to make tall structures visible to aviation and prevent collisions with aircraft. Below are key aspects of the guidelines for telecom tower obstruction lighting

Telecom tower obstruction lighting systems are designed to make tall structures visible to aviation and prevent collisions with aircraft. Below are key aspects of the guidelines for telecom tower obstruction lighting:

General Requirements
1.Towers taller than 200 feet above ground level (AGL) must be marked and lighted to prevent aerial accidents.
2. Types of Lighting Systems
Day/Night Marking: Towers generally have a two-phase lighting system:
Daytime (High-intensity white or strobe lights): These are typically used during the day to provide maximum visibility.
Nighttime (Red lights): Red lights are used at night, as they are less intense and do not cause unnecessary light pollution.
Strobe vs. Steady Lights:
Strobe lights are high-intensity flashing lights that are usually used for tall structures (over 500 feet AGL).
Steady burning lights are constant illumination and are used for shorter towers.
3. Lighting for Towers under 200 Feet
For towers shorter than 200 feet AGL, obstruction lighting may not always be required. However, local regulations, the proximity to airports, or FAA reviews may still necessitate lighting.
4. Lighting System Design
The lighting system should include:
Red Lights: Used at night or low visibility conditions, generally for towers under 500 feet.
White Strobe Lights: For tall towers, generally used to make the structure more visible to aircraft in daylight. These lights may be used with red lights in some applications.
Combination Systems: Combination of red and white lights might be required for specific tower heights, with red lights used at night and white during the day.

ICAO (International Civil Aviation Organization) provides guidelines for marking and lighting of obstructions to aircraft.
National Aviation Authorities (NAA) in different countries will often have specific requirements depending on local aviation traffic and regulatory conditions.

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