Provided is a camera device which is capable of estimating a road shape ahead of a target vehicle or capable of determining whether or not the target vehicle needs to be decelerated by controlling a brake before a curve, even in the situation where a white line of a traveling road or a roadside three-dimensional object is difficult to detect. A camera device 105 including a plurality of image capturing units 107 and 108 which each take an image of a traveling road ahead of a target vehicle 106, includes: a three-dimensional object ahead detection unit 114 which detects three-dimensional objects ahead 101 existing in a vicinity of a vanishing point of the traveling road 102 on the basis of the images picked up by the plurality of image capturing units 107 and 108; and a road shape estimation unit 113 which estimates a road shape of a distant portion on the traveling road 102 on the basis of a detection result detected by the three-dimensional object ahead detection unit 114.