A driving support system for a vehicle comprising: a recognition unit configured to recognize a solid object existing in a direction of movement of a subject vehicle; an acquisition unit configured to acquire an avoidance target path for avoiding a collision between the solid object and the subject vehicle based on a travel state of the subject vehicle, in cases where an existence of the solid object has been recognized by the recognition unit; a support control unit configured to perform turning control of the subject vehicle according to the avoidance target path acquired by the acquisition unit; and a turning permission unit configured to permit execution of the turning control of the subject vehicle by means of the support control unit based on a distance between the position of the subject vehicle under the turning control and the position of the solid object in a turning control zone on the avoidance target path on which the turning control of the subject vehicle is carried out by the support control unit; wherein the turning permission unit is configured to permit the execution of the turning control of the subject vehicle by the support control unit, in cases where the distance between the position of the subject vehicle under the turning control and the position of the solid object continues to be equal to or less than a predetermined avoidance distance in an entire range of a turning control zone, the turning control zone being a continuous section between a predetermined control starting point (Ps) and a predetermined control ending point (Pf), the control starting point (Ps) being a point on the avoidance target path at which the turning control of the subject vehicle is started by the support control unit, and the control ending point (Pf) being a point on the avoidance target path at which the turning control of the subject vehicle ends, whereas the turning permission unit is configured to prohibit the execution of the turning control of the subject vehicle by the support control unit, in cases where the distance exceeds the predetermined avoidance distance. a recognition unit configured to recognize a solid object existing in a direction of movement of a subject vehicle; an acquisition unit configured to acquire an avoidance target path for avoiding a collision between the solid object and the subject vehicle based on a travel state of the subject vehicle, in cases where an existence of the solid object has been recognized by the recognition unit; a support control unit configured to perform turning control of the subject vehicle according to the avoidance target path acquired by the acquisition unit; and a turning permission unit configured to permit execution of the turning control of the subject vehicle by means of the support control unit based on a distance between the position of the subject vehicle under the turning control and the position of the solid object in a turning control zone on the avoidance target path on which the turning control of the subject vehicle is carried out by the support control unit; wherein the turning permission unit is configured to permit the execution of the turning control of the subject vehicle by the support control unit, in cases where the distance between the position of the subject vehicle under the turning control and the position of the solid object continues to be equal to or less than a predetermined avoidance distance in an entire range of a turning control zone, the turning control zone being a continuous section between a predetermined control starting point (Ps) and a predetermined control ending point (Pf), the control starting point (Ps) being a point on the avoidance target path at which the turning control of the subject vehicle is started by the support control unit, and the control ending point (Pf) being a point on the avoidance target path at which the turning control of the subject vehicle ends, whereas the turning permission unit is configured to prohibit the execution of the turning control of the subject vehicle by the support control unit, in cases where the distance exceeds the predetermined avoidance distance.