Normal life was disrupted as fog engulfed the national capital disrupting rail, road and sir services. More than 40 flights and 90 trains were delayed as visibility dropped due to foggy conditions. Apart from this, four flights were cancelled.<br/><br/>Schedules of trains also continued to be marred by the fog as arrival and departure of 90 trains was affected.<br/><br/>AIR Correspondent reports, after visiting the railway stations an the Delhi Airport that huge crowds could be seen waiting anxiously to know the status of their trains and flights.