A road lane marker detection apparatus includes an imaging portion that captures an image of the road surface such that a first road lane marker and a second road lane marker are captured in the image; a feature point obtaining portion that obtains feature points of the road lane markers; a storing portion that stores the feature points obtained; and a lane marker detecting portion that detects the road lane markers. The storing portion includes a first storage area in which the feature points of the first road lane marker are stored and a second storage area in which the feature points of the second road lane marker are stored. The number of feature points able to be stored in the first storage area and the number of feature points able to be stored in the second storage area are set independently of one another.