CER also needs to be enabled on your mobile units through operational profiles. Revisit Create and Manage Operational Profiles for information about managing operational profiles.
By default, CER only includes hard braking, overspeed, excessive overspeed, and manual critical events. Lane departure warnings, roll stability, following time violations, forward collision warnings, and Critical Event Video require additional hardware and sensors to be installed. They also require enabling CER add-ons in the operational profile.
Review your operational profiles to ensure CER and any applicable CER add-ons are enabled.