What is the minimum visibility condition under which refueling and explosive loaded vehicles can be operated without base/wing commander authorization?

The minimum visibility condition under which refueling and explosive loaded vehicles can operate without base or wing commander authorization is established for safety and operational efficiency. When visibility is at or above 300 feet, it allows personnel to maintain a clear line of sight and situational awareness, which are crucial when handling potentially dangerous materials such as fuel or explosives. Operating under these conditions ensures that personnel can respond quickly to any emergencies, navigate safely through the airfield, and effectively avoid collisions with other vehicles or obstructions.

Visibility below this threshold can significantly increase the risk of accidents due to reduced awareness of the environment. Hence, 300 feet serves as the minimum standard, balancing operational requirements while emphasizing safety protocols that are necessary when dealing with hazardous materials. Other visibility conditions mentioned in the question would not meet the safety criteria established for these high-risk operations.