Final answer:
Vehicles should not operate within 200 feet to the front or 100 feet to the rear of aircraft with engines running or about to be started.
Step-by-step explanation:
According to the Federal Aviation Administration regulations, vehicles should not operate within 200 feet to the front or 100 feet to the rear of aircraft with engines running or about to be started. These restrictions are in place to ensure the safety of both the aircraft and the vehicles on the ground. It is important to follow these rules to prevent any accidents or damage to the aircraft.