What is the minimum visibility requirement for takeoff or landing under special VFR in Class D airspace?

The minimum visibility requirement for takeoff or landing under special VFR (Visual Flight Rules) in Class D airspace is indeed that pilots must remain clear of clouds and have at least 1 statute mile (SM) of visibility. This rule is designed to ensure that pilots can visually navigate and avoid obstacles while flying in conditions that may not meet the standard VFR weather minimums. By maintaining a visibility of at least 1 SM, pilots can adequately assess their surroundings and make informed decisions regarding their flight path. This requirement significantly enhances safety during operations in controlled airspace, especially when visibility conditions are less than ideal.