Allow your users to plan a route for a specific arrival or departure time so they can use this information to adjust their commute plans.
Sample use case: You have a busy schedule and need to carefully plan your day. You use the " arrive at" option to learn when you need to leave in order to be at a specific place at a specific time. You then use "depart at" to know your ETA for your next appointment.
In the following example you can see a sample implementation using the arrive at and depart at parameters for a trip from Amsterdam to Rotterdam. The example uses a standard date/time picker widget.