Abstract: A travel assistance system including a server that assists traveling of a vehicle, comprises: a recognition unit configured to recognize an obstruction factor for traveling of the vehicle; an obtainment unit configured to obtain information of an approaching vehicle that approaches the obstruction factor; a generation unit configured to, based on information of the obstruction factor recognized by the recognition unit, generate warning information corresponding to information of a type of the approaching vehicle obtained by the obtainment unit; a transmission unit configured to transmit the warning information to the approaching vehicle; and a control unit configured to give notification to an occupant of the approaching vehicle and/or control traveling of the approaching vehicle based on the warning information.

Abstract: A travel support system includes a server configured to support the travel of a vehicle. The server comprises a recognition unit configured to recognize an obstacle on a travel path of the vehicle, an obtainment unit configured to obtain, upon detecting an approaching vehicle which is approaching the obstacle, a blind spot region which occurs due to the obstacle recognized by the recognition unit, and a notification unit configured to notify the approaching vehicle of information of the blind spot region obtained by the obtainment unit. The server is arranged in an apparatus other than the approaching vehicle.

Abstract: An attachment structure for an exhaust gas sensor, wherein an exhaust gas sensor is attached to a downstream connection pipe part of an exhaust pipe so as to be disposed, in a side view of a motorcycle, in a spatial region between a footrest and a brake pedal provided to the motorcycle.

Abstract: A travel assistance system including a server that assists traveling of a vehicle, comprises: a recognition unit configured to recognize an obstruction factor for traveling of the vehicle; an obtainment unit configured to obtain information of an approaching vehicle that approaches the obstruction factor; a generation unit configured to, based on information of the obstruction factor recognized by the recognition unit, generate warning information corresponding to information of a type of the approaching vehicle obtained by the obtainment unit; a transmission unit configured to transmit the warning information to the approaching vehicle; and a control unit configured to give notification to an occupant of the approaching vehicle and/or control traveling of the approaching vehicle based on the warning information.

Abstract: A travel support system includes a server configured to support the travel of a vehicle. The server comprises a recognition unit configured to recognize an obstacle on a travel path of the vehicle, an obtainment unit configured to obtain, upon detecting an approaching vehicle which is approaching the obstacle, a blind spot region which occurs due to the obstacle recognized by the recognition unit, and a notification unit configured to notify the approaching vehicle of information of the blind spot region obtained by the obtainment unit. The server is arranged in an apparatus other than the approaching vehicle.

Abstract: A saddle riding vehicle includes a unit swing engine swingably supported on a body frame through a link member, and an exhaust device provided with an exhaust pipe and a catalyst device. The link member is disposed on an upper side of a crankcase. Part of the catalyst device is disposed below a cylinder section and is located in a region between an imaginary line that connects a link member coupling section coupling the link member to the body frame and a front end of the crankcase and an imaginary line that connects an exhaust pipe connection section of the unit swing engine connected with an end of the exhaust pipe and the link member coupling section, in side view. An exhaust device coupling section that couples the crankcase and the exhaust device is provided.

Abstract: A saddle riding vehicle includes a unit swing engine swingably supported on a body frame through a link member, and an exhaust device provided with an exhaust pipe and a catalyst device. The link member is disposed on an upper side of a crankcase. Part of the catalyst device is disposed below a cylinder section and is located in a region between an imaginary line that connects a link member coupling section coupling the link member to the body frame and a front end of the crankcase and an imaginary line that connects an exhaust pipe connection section of the unit swing engine connected with an end of the exhaust pipe and the link member coupling section, in side view. An exhaust device coupling section that couples the crankcase and the exhaust device is provided.

Abstract: An attachment structure for an exhaust gas sensor (74), wherein an exhaust gas sensor (74) is attached to a downstream connection pipe part (68c) of an exhaust pipe (66) so as to be disposed, in a side view of a motorcycle (10), in a spatial region between a footrest (78) and a brake pedal (76) provided to the motorcycle (10).