The research on the use of hands-free devices while driving has yielded mixed results. Some studies suggest that using hands-free devices can be as distracting as talking on a handheld phone while driving, while others indicate that hands-free devices may be safer. Additionally, various factors, such as the type of device, road conditions, and individual driver characteristics, can influence the safety of using hands-free devices. Therefore, more research is needed to conclusively determine the safety of hands-free devices in cars.