Abstract: A traveling control apparatus includes a computer device. The computer device performs control that causes a first vehicle to travel at a set constant vehicle speed or to travel following a second vehicle traveling in front of the first vehicle. The computer device includes a control target setting unit and a following control unit. The control target setting unit performs a determination of conformity between a third vehicle detected on a merging lane and a vehicle intending to enter a position immediately before the first vehicle. Based on a result of the determination, the control target setting unit sets the third vehicle as a merging vehicle serving as a target to follow. The following control unit performs control to cause the first vehicle to travel following the merging vehicle set by the control target setting unit as the target to follow.