Abstract: A method and a device are disclosed for assisting with the lateral positioning of a vehicle, said vehicle being able to be driven by a driver in an automated manner along a reference path in a traffic lane, said traffic lane being bounded by two edges. The method comprises steps of detecting an upcoming split in the traffic lane, determining a widened area in the traffic lane, and determining a plurality of reference paths.

Abstract: A method and a device are disclosed for partitioning a widened area of a limited traffic lane bounded by two edges, and through which a vehicle can be driven by a driver in an automated manner along a reference path, said vehicle comprising a lateral positioning aid with respect to the reference path. The method comprises detecting a lane split, determining a widened area (204), determining a plurality of reference paths, and partitions the widened area into a plurality of sub-areas according to the determined reference paths.