Runway markings. there are 3 types of marking the runways: visual or basic marking. nonprecision instrument. and precision instrument The type of markin runway. the type of navigational aids to assist airplane on approach to land on the A basic or visual runway is for aircraft operations using visual approach procedures only. which means the pilot landing the aircraft with clear visibility A nonprecision instrument is having an instrument using air navigation facilities with horizontal guidance. While precision instrument having both instrument guidance both horizontal and vertical guidance to the runway runway A visual runway marking consisting of runway designators (the name of indicate depending on the direction to the magnetic compass. The letter also applied to right-R and left-L), runway centerlines (indicate the center of the runway), and aiming point (use as visual aiming point for landing the airplane). Where nonprecision instrument runway includes more marking to indicate the beginning of the runway called threshold' marking. While, precision instrument runway has additional marking called touchdown zone markings' (it is for landing operations) as shown in figure 2.