Abstract: A cleat-pedal attachment system includes a cleat, comprising first and second surfaces, and a pedal. The pedal comprises a spindle, configured to reversibly attach to a crank arm of a bicycle, and a pedal frame. The pedal frame comprises a third surface positioned near the side of the pedal frame furthest from the crank arm, and a fourth surface, substantially perpendicular to the spindle axis, positioned near the side of the pedal frame closest to the crank arm. The first and third surfaces are shaped and oriented so that if the first surface is placed in direct contact with the third surface, a vertical force applied to the cleat in an upwards direction away from the pedal frame causes the second surface of the cleat to exert a horizontal force against the fourth surface of the pedal frame, maintaining the relative positions of the cleat and the pedal.

Abstract: A cleat-pedal attachment system includes a cleat, comprising first and second surfaces, and a pedal. The pedal comprises a spindle, configured to reversibly attach to a crank arm of a bicycle, and a pedal frame. The pedal frame comprises a third surface positioned near the side of the pedal frame furthest from the crank arm, and a fourth surface, substantially perpendicular to the spindle axis, positioned near the side of the pedal frame closest to the crank arm. The first and third surfaces are shaped and oriented so that if the first surface is placed in direct contact with the third surface, a vertical force applied to the cleat in an upwards direction away from the pedal frame causes the second surface of the cleat to exert a horizontal force against the fourth surface of the pedal frame, maintaining the relative positions of the cleat and the pedal.

Abstract: A method of presenting a desired view of external surroundings to a rider of a bicycle attaches a mirror to a smart device) at a position and orientation relative to a camera integrated into the smart device such that light from external surroundings incident on the mirror is reflected onto the camera, and activates an application on the smart device causing images captured by the smart device to be displayed on a display screen of the smart device. The smart device is removably attached to the bicycle such that the smart device display screen is visible to the rider when the rider is in a substantially horizontal riding position on the bicycle.