Sometimes you might have to drive to an appointment along a route you are not familiar with. You might want to know how the traffic would be like at various times of the day so that you can pick the best time to go. Google Maps has you covered. I don’t know when Google introduced this feature but it is sure very interesting.
In Google Maps just hit the “Traffic” button. There is an option to view the live traffic and another option to look at predicted traffic based on day and time.