A vehicle includes a frame, a passenger presence sensor mounted thereto, and a seat assembly removably connected to. The seat assembly includes a driver seat disposed on the frame and a passenger seat disposed on the frame rearward of the 5 driver seat, at least the passenger seat being selectively disposed on the frame. A rigid passenger presence responsive member (PPRM) is retained in the passenger seat and movable with respect to the frame between at least a first position and a second position responsive to a weight of a passenger seated on the passenger seat. The PPRM is coupled to the passenger presence sensor in at least one of the first and 10 second positions, the passenger presence sensor is thereby configured to detect a presence of the passenger. Removable passenger seats for a vehicle are also disclosed.

A vehicle includes a frame, a passenger presence sensor mounted thereto, and a seat assembly removably connected to. The seat assembly includes a driver seat disposed on the frame and a passenger seat disposed on the frame rearward of the 5 driver seat, at least the passenger seat being selectively disposed on the frame. A rigid passenger presence responsive member (PPRM) is retained in the passenger seat and movable with respect to the frame between at least a first position and a second position responsive to a weight of a passenger seated on the passenger seat. The PPRM is coupled to the passenger presence sensor in at least one of the first and 10 second positions, the passenger presence sensor is thereby configured to detect a presence of the passenger. Removable passenger seats for a vehicle are also disclosed.

Various embodiments provide for a bike-supported communication network that manages and facilitates communications between components of an electric bicycle and a wireless network. In some embodiments, the systems and methods provide a communication system for an electric bicycle that includes a communication device that facilitates wireless communications between the electric bicycle and a wireless network, and an antenna coupled to the communication device and at least partially integrated into a frame component of the electric bicycle.

A bicycle seatpost assembly comprises a first tube, a second tube, and a positioning structure to relatively position the first tube and the second tube. The positioning structure is mounted to at least one of the first tube and the second tube and is configured to change a state of the bicycle seatpost assembly among a first adjustable state in which the second tube is retracted or extended relative to the first tube at a first speed in response to a reference force applied to the second tube, and a second adjustable state in which the second tube is retracted or extended relative to the first tube at a second speed in response to the reference force applied to the second tube. The second speed is lower than the first speed.

A bicycle seatpost assembly comprises a first tube, a second tube, and a positioning structure to relatively position the first tube and the second tube. The positioning structure is mounted to at least one of the first tube and the second tube and is configured to change a state of the bicycle seatpost assembly among a first adjustable state in which the second tube is retracted or extended relative to the first tube at a first speed in response to a reference force applied to the second tube, and a second adjustable state in which the second tube is retracted or extended relative to the first tube at a second speed in response to the reference force applied to the second tube. The second speed is lower than the first speed.

A two-wheeled motor vehicle seat device with a backrest provided on a seat main body so as to be movable in a fore-and-aft direction is provided in which the backrest is provided on the seat main body mounted on a vehicle body so that the backrest can move in a fore-and-aft direction thereof, a heater is incorporated into the backrest, and a harness connected to the heater is passed through an interior of the seat main body and connected to a power supply. This enables the heater to be incorporated into the backrest to heat the backrest without interfering with the fore-and-aft movement of the backrest.

A two-wheeled motor vehicle seat device with a backrest provided on a seat main body so as to be movable in a fore-and-aft direction is provided in which the backrest is provided on the seat main body mounted on a vehicle body so that the backrest can move in a fore-and-aft direction thereof, a heater is incorporated into the backrest, and a harness connected to the heater is passed through an interior of the seat main body and connected to a power supply. This enables the heater to be incorporated into the backrest to heat the backrest without interfering with the fore-and-aft movement of the backrest.

The invention relates to a backrest for devices driven by means of pedals comprising a holder for fastening to the device and a contact surface for supporting a person operating the device, wherein the contact surface has a base body, on which at least one spherical segment-shaped contact surface, a roller segment-shaped contact surface arranged parallel to the pedals when in use, and/or a contact surface, which can be moved relative to the base body, is arranged. The invention furthermore relates to a saddle comprising a backrest, in the case of which the backrest is arranged in an articulated manner relative to the saddle, preferably so as to lock in place, in order to form an essentially horizontal saddle extension.

The invention relates to a backrest for devices driven by means of pedals comprising a holder for fastening to the device and a contact surface for supporting a person operating the device, wherein the contact surface has a base body, on which at least one spherical segment-shaped contact surface, a roller segment-shaped contact surface arranged parallel to the pedals when in use, and/or a contact surface, which can be moved relative to the base body, is arranged. The invention furthermore relates to a saddle comprising a backrest, in the case of which the backrest is arranged in an articulated manner relative to the saddle, preferably so as to lock in place, in order to form an essentially horizontal saddle extension.

A backrest for selectively connecting to a frame of a vehicle having a straddle seat has a back support, and first and second arms connected to the back support and extending forward thereof. Each of the arms has a first portion at least partially defining a first slot, a second portion slidably connected to the first portion, and a biasing member disposed between the first and second portions. The second portion defines a second slot. The first and second slots open in opposite directions. A vehicle having the backrest and a method of installing the backrest on a vehicle are also disclosed.