NASCAR has a number of measures in place to ensure the safety of its drivers at high speeds. These measures include the safety features of the cars themselves, such as the roll cage, seat belts, and fire suppression system. NASCAR also has protocols in place, such as the use of caution flags and the presence of medical personnel at races, to help protect drivers. In addition, NASCAR is constantly working to improve driver safety through initiatives and technologies such as safer barriers, advanced cockpit protection, and head and neck restraints.