1 reason due to the difference is for commercial flights to
differentiate between 02R and 01, the markings on the runway is
different. on a bad day with low visability, a pilot may force his
way in and land after decision height on ILS, the runway markings
are for him to realise that he is on the wrong runway, another
simple reason, u cannot call the new r/w, 02r of r rite...
heard the atc at changi kao peh kao bu, alot of procedures for 02r
had to change, no more go around right on 02r, must go left. they
put up alot of resistance for the new r/w but lost.