Various systems and methods associated with protecting a rider of an electric bicycle from hazards while riding their bicycle are described. In some embodiments, the systems and methods enhance the safety of the rider in response current detected conditions surrounding the rider, such as conditions associated with the route or path traveled by the rider, other vehicles within the route or path traveled by the rider, potential hazards within the route or path traveled by the rider, environmental conditions through which the rider is traveling, and so on.

A bicycle light that is constructed and arranged to be supplied with input electrical power. The power can be supplied by multiple power sources, or not. When there are multiple power sources, the bicycle light includes a circuit that is adapted to deliver power to the light source from any of the power sources. The bicycle light can have an electrical power output, and a circuit that is adapted to deliver power to the light source and the power output.

A bicycle light that is constructed and arranged to be supplied with input electrical power. The power can be supplied by multiple power sources, or not. When there are multiple power sources, the bicycle light includes a circuit that is adapted to deliver power to the light source from any of the power sources. The bicycle light can have an electrical power output, and a circuit that is adapted to deliver power to the light source and the power output.

A bicycle frame assembly including a seat tube having first and second end portions (wherein the seat tube second end portion includes a bend and terminates in a first open end facing a first direction), a down tube having first and second end portions (wherein the down tube first end portion is mounted to the seat tube first end portion, and the down tube second end portion includes a bend and terminates in a second open end facing a second direction opposite to the first direction), and a top tube having first and second end portions (wherein the top tube first end portion is mounted to the seat tube second end portion and terminates in a third open end facing the first direction, and the top tube second end portion is mounted to the down tube second end portion and terminates in a fourth open end facing the second direction).

An electric bicycle that has a communication system, including at least one electronic processing module for processing information for the rider of the electric bicycle, and at least one signal device for providing the processed information to the rider. To reduce safety risks due to the rider being distracted by his/her surroundings while riding the electric bicycle and to increase riding comfort, the at least one signal device is designed to output the information as a tactile, optical, and/or acoustic signal emitted by the electric bicycle in order to spontaneously influence the rider.

According to an embodiment of the present disclosure, a portable lighting device capable of adaptive brightness control includes: a light irradiation unit that irradiates light; a brightness sensing unit that measures the brightness of a region in front of a current position at a predetermined distance; and a control unit that controls the amount of light to be irradiated by the light irradiation unit depending on the brightness measured by the brightness sensing unit. Herein, the control unit controls the amount of light by changing the width of an ON pulse period in which the light irradiation unit is operated within a discrete signal controlling the light irradiation unit or by changing the intensity of light in response to a continuous signal controlling the light irradiation unit.

According to an embodiment of the present disclosure, a portable lighting device capable of adaptive brightness control includes: a light irradiation unit that irradiates light; a brightness sensing unit that measures the brightness of a region in front of a current position at a predetermined distance; and a control unit that controls the amount of light to be irradiated by the light irradiation unit depending on the brightness measured by the brightness sensing unit. Herein, the control unit controls the amount of light by changing the width of an ON pulse period in which the light irradiation unit is operated within a discrete signal controlling the light irradiation unit or by changing the intensity of light in response to a continuous signal controlling the light irradiation unit.

A bicycle handlebar module combining brake levers and derailleur shifter control devices comprises a bicycle handlebar, two brake levers, and two derailleur shifter control devices, two ends of the bicycle handlebar are respectively formed with a grip part, and a front side of the bicycle handlebar near each of the two ends is respectively formed with a pivoting part and an accommodating part, the two brake levers are pivotally connected to the two pivoting parts with one end respectively, the brake levers are exposed on the front side of the bicycle handlebar, and the two derailleur shifter control devices are respectively disposed in the accommodating parts of the bicycle handlebar; thereby, the bicycle handlebar, the brake levers and the two derailleur shifter control devices jointly form a modular structure, and thus achieving an object of modular production and modular sales.

A bicycle handlebar module combining brake levers and derailleur shifter control devices comprises a bicycle handlebar, two brake levers, and two derailleur shifter control devices, two ends of the bicycle handlebar are respectively formed with a grip part, and a front side of the bicycle handlebar near each of the two ends is respectively formed with a pivoting part and an accommodating part, the two brake levers are pivotally connected to the two pivoting parts with one end respectively, the brake levers are exposed on the front side of the bicycle handlebar, and the two derailleur shifter control devices are respectively disposed in the accommodating parts of the bicycle handlebar; thereby, the bicycle handlebar, the brake levers and the two derailleur shifter control devices jointly form a modular structure, and thus achieving an object of modular production and modular sales.

Position indicating devices, systems and methods useable for signaling the positions of pedestrians or vehicles.