A control apparatus of a vehicle seat comprising: at least one actuator (30; 68) provided in a vehicle configured to travel by automatic driving, the actuator (30; 68) being configured to adjust at least one of a reclining angle or a position of the vehicle seat in a seat front-rear direction, and the reclining angle being an angle of a seat back of the vehicle seat in a seat rearward direction relative to a seat cushion of the vehicle seat ; and a control unit configured to determine whether or not a road divider is provided on a road where the vehicle is traveling and perform, when determining that no road divider is provided, at least any one of 1) controlling the actuator (30; 68) not to incline the seat back rearward at an angle more than a predetermined angle, 2) controlling the actuator (30; 68) not to position the vehicle seat at a position more rearward than a predetermined position, 3) outputting a warning signal when the seat back is inclined rearward at an angle more than the predetermined angle, and 4) outputting a warning signal when the vehicle seat is positioned at a position more rearward than the predetermined position. at least one actuator (30; 68) provided in a vehicle configured to travel by automatic driving, the actuator (30; 68) being configured to adjust at least one of a reclining angle or a position of the vehicle seat in a seat front-rear direction, and the reclining angle being an angle of a seat back of the vehicle seat in a seat rearward direction relative to a seat cushion of the vehicle seat ; and a control unit configured to determine whether or not a road divider is provided on a road where the vehicle is traveling and perform, when determining that no road divider is provided, at least any one of 1) controlling the actuator (30; 68) not to incline the seat back rearward at an angle more than a predetermined angle, 2) controlling the actuator (30; 68) not to position the vehicle seat at a position more rearward than a predetermined position, 3) outputting a warning signal when the seat back is inclined rearward at an angle more than the predetermined angle, and 4) outputting a warning signal when the vehicle seat is positioned at a position more rearward than the predetermined position. determine whether or not a road divider is provided on a road where the vehicle is traveling and perform, when determining that no road divider is provided, at least any one of 1) controlling the actuator (30; 68) not to incline the seat back rearward at an angle more than a predetermined angle, 2) controlling the actuator (30; 68) not to position the vehicle seat at a position more rearward than a predetermined position, 3) outputting a warning signal when the seat back is inclined rearward at an angle more than the predetermined angle, and 4) outputting a warning signal when the vehicle seat is positioned at a position more rearward than the predetermined position. 1) controlling the actuator (30; 68) not to incline the seat back rearward at an angle more than a predetermined angle, 2) controlling the actuator (30; 68) not to position the vehicle seat at a position more rearward than a predetermined position, 3) outputting a warning signal when the seat back is inclined rearward at an angle more than the predetermined angle, and 4) outputting a warning signal when the vehicle seat is positioned at a position more rearward than the predetermined position. <EOS>