Runway Thresholds

The threshold is indicated by the "piano keys"
A displaced threshold where the area of the arrows CANNOT be used for landing but CAN be used for other aircraft movements.
A displaced threshold where the area of crosses is unfit for any aircraft movement.
A temporarily displaced threshold (for 6 months or less). The displaced threshold where the area of the arrows CANNOT be used for landing but CAN be used for other aircraft movements.
A temporarily displaced threshold (for 6 months or less) where the area of crosses is unfit for any aircraft movement.