| 109 ways are usually lit at rst dusk, but also during daylight when the weather conditions are bad. Unlike the blue retro-re- ective lights that identify the edges of the taxiway, the green central lights are very intense and are used at busy airports in low visibility conditions. Pilots can see andmonitor themin themost demanding weather conditions, day or night. Although technically they are not the lights, the“tra c signs”along the taxiway and runway are also illuminated andmust be clearly visible in all weather conditions. A sign with a black background and yellow letters and numbers (A3) indicates which taxiway the aircraft is on. A sign with a yellow background and black letters and numbers (A4) indicates the “intersection” of the taxiways. Red characters withwhite letters and numbers (31R) always mark the runway. The red colour reminds pilots not to proceed without the approval of the air tra c controller. To paraphrase the great Ivo Andrić, we can say that airport signage is a real “signs by the roadside”, signs that illuminate powerful birds around the clock and mark a safe route. Pilotima su svetla i oznake na pisti poput tajnog jezika To pilots, the lights and markings on the runway are like a secret language Da li ste znali? Prvi aerodrom koji je koristio svetla za pistu bilo je „Cleveland City Airport – Ohio“ (sada Hopkins International) još 1930. godine! Did you know? The rst airport to use runway lights was Cleveland City Airport - Ohio (now Hopkins International), way back in 1930!