This can refer to literal steering of a tractor or car (or simulation of these), or may refer to a form of pointing tasks where the pointer has to be navigated along a path. In the former case, the steering may be used as a distractor task for another primary task that is the real purpose of an experiment.
Also used in hcistats2e: Chap. 13: page 159
Used in glossary entries: distractor task, pointing task