A system for operating an automated vehicle in accordance with an operation-rules that are based on an automation-level of an other-vehicle includes an automation-detector and a controller. The automation-detector conveys an automation-level indicated by an other-vehicle proximate to a host-vehicle. The controller is in communication with the automation-detector. The controller operates the host-vehicle in accordance with an operation-rule that is selected based on the automation-level of the other-vehicle. For example, the controller operates the host-vehicle to follow the other-vehicle at a first-distance when the automation-level is an autonomous-mode, and follow the other-vehicle at a second-distance greater than the first-distance when the automation-level is a manual-mode, i.e. human-driven.