“…The research objectives of the reviewed papers range from the detection of when a person enters the vehicle [65], the classification of users into drivers and passengers [63,66,77,114], the identification of the driver's interaction with the smartphone [64,73,84,106], the classification of driving events and driving styles [68,75,83,90], the detection of distracted drivers [48][49][50][51][52]69,113], the detection of inattentive drivers [49,53,54,111], the detection of gaze direction for distracted driving [78], to the identification of the driver's speech direction [79].…”