What is the primary purpose of light gun signals?

The primary purpose of light gun signals is to communicate with drivers or aircraft that cannot be contacted by radio. Light gun signals serve as an important alternative method of communication, particularly in situations where radio communication is not possible due to equipment failure or interference. They are visual signals used to convey instructions from ground control to pilots, especially in situations where the aircraft may be stationary or in close proximity to the runway and need immediate guidance. The use of light signals ensures that communication can still occur effectively, without reliance on radio systems, which may be vital for maintaining safety and operational efficiency at airports.