An apparatus for controlling traveling of a vehicle, comprising: a set vehicle speed detector (40, S61) configured to detect a set vehicle speed (V SET); a limited vehicle speed detector (40, S41) configured to detect a limited vehicle speed (V LIMIT) of a road, on which a host vehicle is traveling; a first man-machine interface configured to set the set vehicle speed (V SET), manually by a driver's operation made to the first man-machine interface; a second man-machine interface configured to set a desired vehicle speed (V T) to the limited vehicle speed (V LIMIT) manually by a driver's operation made to the second man-machine interface; a driver's operation detector (40, S61, S63) configured to detect the driver's operation made to the man-machine interfaces (41,42); a desired vehicle speed setting section (40, S33-S34, S41, S43, S63-S64) configured to set the desired vehicle speed (V T) basically to the set vehicle speed (V SET), based on an operational signal from the first man-machine interface indicating a result of detection of the driver's operation made to the first man-machine interface, and also configured to set the desired vehicle speed (V T) to the limited vehicle speed (V LIMIT), based on an operational signal from the second man-machine interface indicating a result of detection of the driver's operation made to the second man-machine interface, under a condition where the limited vehicle speed (V LIMIT) has been detected by the limited vehicle speed detector (40, S41), in order to accurately match the timing of setting of set vehicle speed (V SET) to limited vehicle speed (V LIMIT) in accord with a driver's wishes, while granting priority to the driver's operation made to the second man-machine interface; and a control device configured to control a speed of the host vehicle in a manner so as to bring the host vehicle speed closer to the desired vehicle speed (V T) a set vehicle speed detector (40, S61) configured to detect a set vehicle speed (V SET); a limited vehicle speed detector (40, S41) configured to detect a limited vehicle speed (V LIMIT) of a road, on which a host vehicle is traveling; a first man-machine interface configured to set the set vehicle speed (V SET), manually by a driver's operation made to the first man-machine interface; a second man-machine interface configured to set a desired vehicle speed (V T) to the limited vehicle speed (V LIMIT) manually by a driver's operation made to the second man-machine interface; a driver's operation detector (40, S61, S63) configured to detect the driver's operation made to the man-machine interfaces (41,42); a desired vehicle speed setting section (40, S33-S34, S41, S43, S63-S64) configured to set the desired vehicle speed (V T) basically to the set vehicle speed (V SET), based on an operational signal from the first man-machine interface indicating a result of detection of the driver's operation made to the first man-machine interface, and also configured to set the desired vehicle speed (V T) to the limited vehicle speed (V LIMIT), based on an operational signal from the second man-machine interface indicating a result of detection of the driver's operation made to the second man-machine interface, under a condition where the limited vehicle speed (V LIMIT) has been detected by the limited vehicle speed detector (40, S41), in order to accurately match the timing of setting of set vehicle speed (V SET) to limited vehicle speed (V LIMIT) in accord with a driver's wishes, while granting priority to the driver's operation made to the second man-machine interface; and a control device configured to control a speed of the host vehicle in a manner so as to bring the host vehicle speed closer to the desired vehicle speed (V T)