I had worked on analysis of data from National Highway Traffic Safety Administration (NHTSA), the number of traffic accidents based on factors such as weather,

I had worked on analysis of data from National Highway Traffic Safety Administration (NHTSA), the number of traffic accidents based on factors such as weather, time of the day, month, year, weekdays, weekends etc and found very definitive patterns in the number of traffic accidents. Though that was post analysis, it does look quite interesting to use features such as weather, day of the week etc to predict the rush at the emergency rooms.