Which cellphone contributing factor is NOT listed in the CR-100?

The selection of GPS as the correct answer stems from the fact that while the CR-100 document specifically categorizes various factors related to cellphone use that can impair driving, it does not include GPS usage as a contributing factor. This means that talking on the phone, texting, and using handheld devices are explicitly recognized in terms of their potential to distract the driver and influence road safety.

In contrast, GPS use, while it can also serve as a distraction, is not framed within the same context in the CR-100. This suggests that the report has a particular focus on the more direct and commonly recognized forms of cellphone distraction—such as texting and talking—rather than navigation assistance technologies. Therefore, selecting GPS highlights a distinction in how cellphone interactions are assessed concerning driver behavior in the CR-100.