A transmission apparatus, comprising: a gear unit having a drive shaft, a driven shaft, a plurality of gears (1i to 5i, 1h to 5h) each having a dog portion (32a,31a) and respectively mounted on the drive shaft and the driven shaft so as to be relatively rotatable but not movable in an axial direction, and a plurality of selectors (36 to 38) each having a dog portion (39,36a,38a) and respectively mounted on the drive shaft and the driven shaft so as to be movable in the axial direction but not relatively rotatable, in which a pair of a gear and a selector of which dog portions are engaged with each other constitutes a driveline path extending from the drive shaft to the driven shaft; a shift drum for switching pairs of the gear and the selector of which dog portions are engaged with each other by moving the selector in the axial direction; a shift mechanism for rotating the shift drum; an actuator for driving the shift mechanism; and a control device for controlling the actuator, wherein the shift mechanism has a segment having a plurality of mountain portions and a plurality of valley portions alternately formed along a periphery thereof, and mounted so as to integrally rotate with the shift drum, a follower in contact with the periphery of the segment, and urging means for urging the follower onto a rotation axis of the segment, a rotation angle of the shift drum with the follower positioned on the valley portion formed on the periphery of the segment constitutes a rotation angle at which dog portions (32a,31a;36a,38a) of a gear and a selector are engaged with each other, and while the shift drum rotates from the rotation angle at which dog portions (32a,31a;36a,38a) of a gear and of a selector relevant to a pair before shifting are engaged with each other to a rotation angle at which dog portions (32a,31a;36a,38a) of a gear and of a selector relevant to a pair after the shifting are engaged with each other, the control device is configured to execute a stop control to stop the actuator after the rotation angle of the shift drum passes a rotation angle with the follower positioned on the mountain portion formed on the periphery of the segment, characterized in that the control device is configured to execute the stop control to stop the actuator during a period after the rotation angle of the shift drum passes the rotation angle with the follower positioned on the mountain portion formed on the periphery of the segment before the rotation angle reaches a collision rotation angle at which the dog portions (32a,31a;36a,38a) of the gear and the selector relevant to the pair after the shifting collide against each other. a gear unit having a drive shaft, a driven shaft, a plurality of gears (1i to 5i, 1h to 5h) each having a dog portion (32a,31a) and respectively mounted on the drive shaft and the driven shaft so as to be relatively rotatable but not movable in an axial direction, and a plurality of selectors (36 to 38) each having a dog portion (39,36a,38a) and respectively mounted on the drive shaft and the driven shaft so as to be movable in the axial direction but not relatively rotatable, in which a pair of a gear and a selector of which dog portions are engaged with each other constitutes a driveline path extending from the drive shaft to the driven shaft; a shift drum for switching pairs of the gear and the selector of which dog portions are engaged with each other by moving the selector in the axial direction; a shift mechanism for rotating the shift drum; an actuator for driving the shift mechanism; and a control device for controlling the actuator, wherein the shift mechanism has a segment having a plurality of mountain portions and a plurality of valley portions alternately formed along a periphery thereof, and mounted so as to integrally rotate with the shift drum, a follower in contact with the periphery of the segment, and urging means for urging the follower onto a rotation axis of the segment, a rotation angle of the shift drum with the follower positioned on the valley portion formed on the periphery of the segment constitutes a rotation angle at which dog portions (32a,31a;36a,38a) of a gear and a selector are engaged with each other, and while the shift drum rotates from the rotation angle at which dog portions (32a,31a;36a,38a) of a gear and of a selector relevant to a pair before shifting are engaged with each other to a rotation angle at which dog portions (32a,31a;36a,38a) of a gear and of a selector relevant to a pair after the shifting are engaged with each other, the control device is configured to execute a stop control to stop the actuator after the rotation angle of the shift drum passes a rotation angle with the follower positioned on the mountain portion formed on the periphery of the segment, characterized in that the control device is configured to execute the stop control to stop the actuator during a period after the rotation angle of the shift drum passes the rotation angle with the follower positioned on the mountain portion formed on the periphery of the segment before the rotation angle reaches a collision rotation angle at which the dog portions (32a,31a;36a,38a) of the gear and the selector relevant to the pair after the shifting collide against each other.