Disclosed herein is an active cyclist and/or pedestrian safety system for identifying, warning, and reacting to dangerous situations that may be experienced by cyclists and/or pedestrians. The safety system may receive first information indicative of a head position of a cyclist and determine, based on the first information, a field of view of the cyclist. The safety system may receive second information indicative of an environment of the cyclist and determine, based on the field of view and the environment, an expected trajectory of the cyclist in a next road segment. The safety system may also determine, based on the field of view and the environment, a risk probability for the expected trajectory of the cyclist in the next road segment. The safety system may also generate an instruction to transmit a warning to the cyclist if the risk probability exceeds a threshold value.

A bicycle saddle can be customized to a rider's body to achieve desired support and comfort. The support shell is configured to support a rider's body and can be heated by an external heater and/or at least one internal thermal element operable to heat the bicycle saddle such that the saddle is molded to the rider.

The invention includes apparatus and methods of use for an adjustable disarticulated seat, which in a preferred embodiment may include one, or a plurality of independently or synchronously adjustable disarticulated inserts positioned within insert interface apertures on the distal extended portion of a saddle. An actuator element may be responsive to the one or more disarticulated inserts through one or more cords configured to be retracted or release in response to the action of the actuator causing the extension upward or release downward movement of the one or more inserts within the insert interface aperture.

A seating device includes a seat body having a top seat supporting surface, a mounting base coupled at a bottom surface of the seat body, and two wing supports sidewardly extended from two sides of the seat body respectively, wherein each of the wing supports has a top buttock supporting surface upwardly and sidewardly extended from the top seat supporting surface of the seat body to a side tip of the wing support, and a bottom retention surface inclinedly and upwardly extended to the side tip of the wing support for reinforcing the wing support in a tilt up manner so as to prevent the wing support being sagged down when the wing support is pressured.

A bicycle saddle includes: a base structure having a top portion; and a cushion coupled to the top portion of the base structure, the cushion including a first lateral side and a second lateral side separated by a longitudinal plane, wherein each of the first lateral side and the second lateral side includes: a first region having a first stiffness; a second region having a second stiffness that is less than the first stiffness; and a third region having a third stiffness that is less than the second stiffness, wherein a perimeter of the second region is at least 75% enclosed within the first region, and wherein a perimeter of the third region is at least 75% enclosed within the second region.

A three-wheeled vehicle includes a vehicle frame supported by a single wheel engaging the ground in the front and two wheels engaging the ground in the rear. The operator area of the vehicle may include seating for a driver and a passenger, one in front of the other. The three-wheeled vehicle is uniquely designed so that it can be easily modified by addition or removal of additional structures after it is purchased. The vehicle is ultra-narrow but achieves stability by unique mechanisms.

A three-wheeled vehicle includes a vehicle frame supported by a single wheel engaging the ground in the front and two wheels engaging the ground in the rear. The operator area of the vehicle may include seating for a driver and a passenger, one in front of the other. The three-wheeled vehicle is uniquely designed so that it can be easily modified by addition or removal of additional structures after it is purchased. The vehicle is ultra-narrow but achieves stability by unique mechanisms.

A three-wheeled vehicle includes a vehicle frame supported by a single wheel engaging the ground in the front and two wheels engaging the ground in the rear. The operator area of the vehicle may include seating for a driver and a passenger, one in front of the other. The three-wheeled vehicle is uniquely designed so that it can be easily modified by addition or removal of additional structures after it is purchased. The vehicle is ultra-narrow but achieves stability by unique mechanisms.

A three-wheeled vehicle includes a vehicle frame supported by a single wheel engaging the ground in the front and two wheels engaging the ground in the rear. The operator area of the vehicle may include seating for a driver and a passenger, one in front of the other. The three-wheeled vehicle is uniquely designed so that it can be easily modified by addition or removal of additional structures after it is purchased. The vehicle is ultra-narrow but achieves stability by unique mechanisms.

A seat cushion includes an edge portion and a three-dimensional fiber structure including core-sheath fusible fibers and skeletal fibers thermally fused at intersections thereof. The sheaths of the core-sheath fusible fibers are made of a thermoplastic elastomer to fuse the intersections and form a bulging portion at each of the fused intersections. The skeletal fibers and the cores of the core-sheath fusible fibers are made of a non-elastomer resin. The skeletal fibers are crimp-processed bulky fibers, and a fineness of the skeletal fibers and a fineness of the core-sheath fusible fibers are in a range of 1 to 200 dtex. The seat cushion has a layered structure including a plurality of layers fused together, each of the layers has the three-dimensional fiber structure, and the seat cushion has a density distribution based on regional variations of the layered structure and a stiffness distribution that depends on the density distribution.