A vehicle and a method of controlling the vehicle are provided. The vehicle includes an image capture unit that is configured to acquire image information by imaging a forward view of the vehicle and an imaging device controller that is configured to determine whether a traffic sign that indicates speed limit information of a road is recognized abnormally based on the acquired image information. A navigation controller is configured to display either speed limit information stored in an imaging device database or speed limit information of the road stored in a map database in response to determining that the traffic sign is recognized abnormally.