Taxi clearance

Taxi clearance is the ATC permission to move an aircraft on the ground from parking or apron areas along taxiways, usually to a holding point. You request it before you start taxiing at a controlled aerodrome, and it may include the route, runway, holding point, and other instructions. It does not authorize entry onto the runway or take-off unless that is stated separately. Read back the clearance correctly and follow the assigned route and any hold short instruction.