Shots that capture light trails from a high vantage point can be quite intriguing.  An observation deck is ideal for taking such a shot. Using a wide angle lens,  I shot the expressway that extended  from the foreground into the background, taking care to avoid capturing  any reflection in the window. In order to depict the scene sharply all the way to the background, I set the aperture to f/9. Although I used a relatively shorter  shutter speed of 13 sec, I managed to capture the shot without any interruption in the light trails of the cars as the traffic volume was high then.