Transportation network plays an essential role in civilization's development all over the world. It makes a critical contribution to nation's economic growth and brings considerable social benefits. In Cairo, and due to accelerated growth of population, so traffic congestion and jams problem arises as a consequence. This problem causes billions of hours of travel delay and a lot of wasted fuel besides a severe destruction of environment. This study attempts to investigate the traffic jams in Cairo, and how commuters act daily in their typical travel. For this purpose, a mixed stated preference/revealed preference survey is created and distributed online to investigate the effect of congestion on commuters' daily life, and to trace their possible change of behavior. The collected dataset is analyzed then by means of statistical packages.