Cimri dheer
Nalalka taraafig ee LED-yadayadu waxay cimrigoodu yahay 50,000 saacadood. Tani waa horumar la taaban karo oo laga sameeyay calaamadaha taraafikada ee dhaqameed. Waxay u baahan yihiin dayactir yar, wayna fududahay in la beddelo, hoos u dhigista kharashka dayactirka ee ganacsatada.