Abstract: A transmission line set includes male plug transmission lines, having a first protruding portion and a second protruding portion, a third groove in a ring-shape formed between the first protrusion potion and the second protruding portion, at least two upper conductive interfaces and at least two lower conductive interfaces being symmetrically conductive with each other at opposite angles; and female plug transmission lines, having a third protruding portion and a fourth protruding portion, a fourth protruding portion formed in a ring shape and a second recess formed between the fourth protruding portion and the third protrusion, at least two upper conductive elastic sheets and at least two lower conductive elastic sheets being symmetrically conductive with each other at opposite angles.

Abstract: An automatic brake assist device for an electric two-wheeled vehicle, the electric two-wheeled vehicle includes a main control module, having: a radar sensor module, used to measure a distance from a pair of objects; a control module, connected to the radar sensor module and the main control module, when the distance is changed from greater than a first braking distance to less than the first braking distance, transmitting a first brake braking mode signal to the main control module to decelerate the electric two-wheeled vehicle; when the distance is changed from greater than a second braking distance to less than the second braking distance, transmitting a second brake braking mode signal to the main control module to decelerate the electric two-wheeled vehicle; when the distance is changed from greater than a third braking distance to less than the third braking distance, transmitting a third brake braking mode signal to the main control module to decelerate the electric two-wheeled vehicle.