Apple’s been busy touting the “proactive” features in iOS, but one of the most actually useful aspects of that comes in the Calendar app. As Finer Things in Tech reminds us, if you set up an alert in Calendar for “Time to Leave,” your iPhone will keep an eye on traffic conditions between your current location and your next appointment.
Obviously, this is only useful with a couple parameters in play. First off, your calendar events need to include a location in them. Second, you actually need to use the built-in Calendar app for this. To set this all up, create a new event, type in the location, select the “Alert” option, then chose “Time to Leave.”