I wrote an idea about scheduler logic to take heed of runway availibility 
As you say, only one aircraft can ocupy the runway at any given time so to schedule mere then one flight at a given time on a single runway is a waste
I wrote an idea about scheduler logic to take heed of runway availibility As you say, only one aircraft can ocupy the runway at any given time so to schedule mere then one flight at a given time on a single runway is a waste