A two-wheeled vehicle is provided including a frame, front and rear ground-engaging members each supporting the frame, a straddle-type seat, a handlebar for steering the vehicle, at least one light device configured to operate in a hazard mode, an engine supported by the frame and operably coupled to the ground-engaging members, a tilt sensor, and a vehicle control unit in communication with the tilt sensor. The vehicle control unit is operative to detect a tilt angle of the vehicle based on output from the tilt sensor. The vehicle control unit is operative to determine a tip-over condition of the vehicle based on the detected tilt angle exceeding a threshold tilt angle. The vehicle control unit activates the hazard mode of the at least one light in response to the determination of the tip-over condition.

A front fairing for a scooter that includes a front fork assembly including a triple tree and forks includes: a fairing body that partially defines a shape of the front fairing and that includes a frontward surface, and a rearward surface connected to the front fork assembly; a first connecting member disposed on the rearward surface and that provides temporary connection to the triple tree such that the front fairing is detachable from the triple tree; and two or more of second connecting members on the rearward surface each of which provides temporary connection to one of the forks such that the front fairing is detachable from the forks. The first connecting member and the second connecting members are integral with the fairing body within a same mold. The rearward surface engages with a rear fairing member.

A front fairing for a scooter that includes a front fork assembly including a triple tree and forks includes: a fairing body that partially defines a shape of the front fairing and that includes a frontward surface, and a rearward surface connected to the front fork assembly; a first connecting member disposed on the rearward surface and that provides temporary connection to the triple tree such that the front fairing is detachable from the triple tree; and two or more of second connecting members on the rearward surface each of which provides temporary connection to one of the forks such that the front fairing is detachable from the forks. The first connecting member and the second connecting members are integral with the fairing body within a same mold. The rearward surface engages with a rear fairing member.

A scooter includes a diversity of sensors to adapt scooter characteristics to any one or more than one of safety aspects, and scooter, environmental or driver states. Scooter characteristics susceptible to adaptation include throttle response; motor torque; motor speed; speed; maximum current drawn from energy storage system; braking characteristics, such as distribution, maximum braking power, anti-blocking system parameters or braking; adjusting vehicle dynamics, and suspension parameters such as stiffness, or damping coefficient.

A step-through type vehicle includes: a frame assembly; at least one front wheel and at least one rear wheel connected to the frame assembly and rotated by a power unit; and a plurality of portions comprising one or more flexible portions, and one or more fixed portions. The fixed portions include a front structure, a rear structure, and a top structure disposed between the front structure and the rear structure. The flexible portions include at least one retractable member. The top structure and the retractable member include a plurality of solar panels. The retractable member is detachably attached with the top structure, and is retracted upwardly towards the top structure, and stretched downwardly from the top structure towards the front wheel and the rear wheel. The retractable member is foldably stowed inside at least one box like compartment, which is at least one part of the rear structure.

A step-through type vehicle includes: a frame assembly; at least one front wheel and at least one rear wheel connected to the frame assembly and rotated by a power unit; and a plurality of portions comprising one or more flexible portions, and one or more fixed portions. The fixed portions include a front structure, a rear structure, and a top structure disposed between the front structure and the rear structure. The flexible portions include at least one retractable member. The top structure and the retractable member include a plurality of solar panels. The retractable member is detachably attached with the top structure, and is retracted upwardly towards the top structure, and stretched downwardly from the top structure towards the front wheel and the rear wheel. The retractable member is foldably stowed inside at least one box like compartment, which is at least one part of the rear structure.

A saddle riding vehicle includes: a body frame having a head pipe and a main tube extending from the head pipe; an engine disposed below the main tube; a down frame extending downward from the body frame and disposed in front of the engine; and a radiator disposed in front of the engine and on a side of the down frame, wherein an opening which opens rearward is formed in a fan shroud which covers a rear surface of the radiator, a radiator fan is disposed in the opening, and a front surface of the radiator fan is disposed such that an axis of the radiator fan is inclined toward an outside with respect to a direction in which a surface of a core of the radiator is directed so as to increase a gap with respect to the core from an outer side toward an inner side.

A saddle riding vehicle includes: a body frame having a head pipe and a main tube extending from the head pipe; an engine disposed below the main tube; a down frame extending downward from the body frame and disposed in front of the engine; and a radiator disposed in front of the engine and on a side of the down frame, wherein an opening which opens rearward is formed in a fan shroud which covers a rear surface of the radiator, a radiator fan is disposed in the opening, and a front surface of the radiator fan is disposed such that an axis of the radiator fan is inclined toward an outside with respect to a direction in which a surface of a core of the radiator is directed so as to increase a gap with respect to the core from an outer side toward an inner side.

A two-wheeled vehicle is provided including a frame, front and rear ground-engaging members each supporting the frame, a straddle-type seat, a handlebar for steering the vehicle, at least one light device configured to operate in a hazard mode, an engine supported by the frame and operably coupled to the ground-engaging members, a tilt sensor, and a vehicle control unit in communication with the tilt sensor. The vehicle control unit is operative to detect a tilt angle of the vehicle based on output from the tilt sensor. The vehicle control unit is operative to determine a tip-over condition of the vehicle based on the detected tilt angle exceeding a threshold tilt angle. The vehicle control unit activates the hazard mode of the at least one light in response to the determination of the tip-over condition.

A bicycle can include a forward frame triangle that can include a top tube, a bottom tube, a bottom bracket, a structural seat tube, a compliant seat tube, and a pair of seat stays. The top tube can have a first end connected to a head tube and a second end. The bottom tube can have a first end connected to the head tube. The bottom bracket can be connected to the bottom tube. The structural seat tube can be connected to the bottom bracket and the top tube. The compliant seat tube can extend in an upward direction from the bottom bracket to the top tube and within the structural seat tube. The compliant seat tube can be coupled to the forward frame triangle such that the compliant seat post can bend within the structural seat tube.