Final answer:
Taxi lights on an airplane should be switched off if stationary for more than a few minutes to prevent blinding others and for safety.
Step-by-step explanation:
The question relates to aviation practices rather than automotive or traffic scenarios. According to standard airport and aviation safety regulations, taxi lights on an airplane should be switched off if the airplane is stationary for more than a brief period of time to prevent blinding or misleading ground personnel and other pilots. Although the exact time can vary based on specific airport rules or the aircraft operator's procedures, a common practice is to deactivate taxi lights if stationary for more than a few minutes. The primary reason for this is to maintain clear visibility and safety on the ground.
When an airplane is on the ground, the pilots and crew members often use the aircraft's auxiliary power unit (APU) or ground power to provide electricity. This allows them to turn off the main engines and save fuel. However, using the APU or ground power for extended periods can strain the aircraft's electrical system, so it is recommended to turn off non-essential electrical devices like taxi lights when the plane is stationary for more than 5 minutes.