Abstract: A vehicle control device includes an avoidance determination unit configured to determine whether or not each of a structure and an oncoming vehicle is able to avoid a contact with a subject vehicle on the basis of a position of the structure and a position of the oncoming vehicle, and a driving control unit configured to control one or both of steering or acceleration and deceleration of the subject vehicle to cause the subject vehicle to travel and configured to stop the subject vehicle until the oncoming vehicle passes by the subject vehicle in a case where a state of a dead angle region of the structure is not able to be recognized, even in a case where it is determined that the contact between each of the structure and the oncoming vehicle and the subject vehicle is able to be avoided by the avoidance determination unit.

Abstract: A vehicle control device includes an other-vehicle recognition unit that recognizes another vehicle stopped near a subject vehicle, a specific-vehicle determination unit that determines whether or not the other vehicle recognized by the other-vehicle recognition unit is a specific vehicle of which a main parking place is the place at which the other vehicle is stopped, and a driving control unit that controls one or both of steering and acceleration/deceleration of the subject vehicle to cause the subject vehicle to travel regardless of an operation of an occupant of the subject vehicle, the driving control unit suppressing, with respect to the other vehicle determined to be the specific vehicle by the specific-vehicle determination unit among the other vehicles recognized by the other-vehicle recognition unit, travel control of the subject vehicle with respect to start of the other vehicle as compared with the other vehicle not determined to be the specific vehicle by the specific-vehicle determination unit.

Abstract: This depression-provided steel pipe has plural depressions on an outer peripheral surface, the depressions being formed so as to form a line along an axial direction of the steel pipe, in which each of the depressed portions has, inside thereof, a columnar groove portion extending along the axial direction of the steel pipe and depressed deeper than a bottom surface of these depressed portions; 0.95?HA/HB?1.05 is satisfied, where HA is an average Vickers hardness in each of the depressed portions, and HB is a Vickers hardness at a portion between the depressed portions adjacent to each other in the axial direction of the steel pipe; and the outer peripheral surface is covered with a mill scale.

Abstract: This depression-provided steel pipe has plural depressions on an outer peripheral surface, the depressions being formed so as to form a line along an axial direction of the steel pipe, in which each of the depressed portions has, inside thereof, a columnar groove portion extending along the axial direction of the steel pipe and depressed deeper than a bottom surface of these depressed portions; 0.95?HA/HB?1.05 is satisfied, where HA is an average Vickers hardness in each of the depressed portions, and HB is a Vickers hardness at a portion between the depressed portions adjacent to each other in the axial direction of the steel pipe; and the outer peripheral surface is covered with a mill scale.

Abstract: A steel pipe ground reinforcement of the present invention is driven into a ground and injects a grouting material into the ground. The steel pipe ground reinforcement includes: a recess portion and a smooth portion that are arranged on an outer peripheral surface thereof; and a plurality of through-holes that are arranged in the recess portion or the smooth portion that communicates between the inside and outside of the steel pipe ground reinforcement.