| 摘要 |
A traffic signaling attachment device for bicycles has a supporting framework securable at one end to the bicycle post clamp, pivotally journaled along which framework is a control rod having a manually actuateable handle at the front end just forward of the seat, and a perpendicularly outwardly-extending signal arm at the other end normally supported in perpendicularly-upwardly-extending position but adapted to be manually set for left or right turn signaling, or caution signaling, with a waving motion actuated by cranking of the sprocket wheel while riding.
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