Markings and signs are essential for:

Markings and signs play a crucial role in ensuring safe movement at the airport by providing clear and immediate guidance to both personnel and passengers. These visual cues help prevent accidents by designating specific lanes for vehicles, guiding pedestrians, and signaling important information regarding runway operations, gate locations, and safety protocols.

In an environment as busy and complex as an airport, effective communication through markings and signs helps maintain order and safety. Therefore, these indicators are vital for directing the flow of traffic, whether it is aircraft navigating the tarmac, ground service vehicles maneuvering around the airport, or passengers moving through terminals. This emphasis on safety ultimately contributes to the smooth operation and management of airport activities. Other choices, while relevant in their contexts, do not encompass the primary function of markings and signs as comprehensively as ensuring safety does.