A system for automated operation of a host-vehicle includes a sensor and a controller. The sensor is configured to detect an other-vehicle proximate to a host-vehicle. The controller is in communication with the sensor. The controller is configured to determine a behavior-classification of the other-vehicle based on lane-keeping-behavior of the other-vehicle relative to a roadway traveled by the other-vehicle, and select a travel-path for the host-vehicle based on the behavior-classification. In one embodiment, the behavior-classification of the other-vehicle is based on a position-variation-value indicative of how much an actual-lane-position of the other-vehicle varies from a center-lane-position of the roadway. In yet another embodiment, the behavior-classification of the other-vehicle is based on a vector-difference-value indicative of how much a vehicle-vector of the other-vehicle differs from a lane-vector of the roadway.