The StreetPilot c340 provides in-car navigation you can easily use right out of the box. After you choose a destination from the user-friendly touch screen interface, Garmin’s text-to-speech feature informs you of the name of the street, when to turn, and in what direction. If you miss your turn, the c340 automatically calculates a new route to the destination. Notification of traffic delays is a c340 option that lets drivers see congested areas via a color-coded map.