One respondent specifically suggested including a reporting system as part of the study, and formally
comparing feedback, reporting, and control conditions.
Although reporting strategies of various sorts are potentially valuable approaches to enhancing
safety, they are explicitly outside the scope of the present project. The additional functions
mentioned – lane keeping, headway maintenance, drowsiness detection, and general state of
distraction/attention – all are relevant to teen driving safety. These in fact were considered by the
project team in developing the recommended experimental system but were not included for this
study because other functions were seen as higher priority and/or more practical to implement. The
number of subsystems for this study needed to be limited to the higher priority functions in order to
keep the system from being overly complex, intrusive, and expensive. We suggest that if the
prototype STC is successful, some of these additional functions could be considered for future
refinement.