Headland Alert: OK so we can do parallel lines; and this would go a long way in reducing the overlap; but what is next? What about the turns, or at least a warning of the turns? We learned early on, when we introduced auto-steering, that the driver’s attention waned, with little to do as the tractor drove itself across the field. One was now free to make a call on a cell phone, or have lunch, or maybe even have a nap. We heard of all kinds of horror stories of farmer’s falling asleep and the tractor faithfully following its line right into the neighbors field, or onto a highway, or into a slough. Consequently, we introduced a headland alert, which was nothing more than a beeper that went off just before the headland. However, it was still incumbent upon the operator to recognize the warning and to make the turn in the headland. The next evolutionary improvement would be to make the turn in the headland. A perfect U turn.