A stationary horn or tiller is fixed to the frame (this can also be a U-bar) allowing the rider to lean the seat left or right, hence steering the vehicle.
静止角或分蘖是固定在框架（这也可以是一个U型杆），允许骑车人瘦左或右的座位，因此转向了汽车。
The manufacturing date code is engraved on the frame behind the rear wheel axle crossbar or on the back of the frame on the upright bar between the right rear wheel and the seat.
生产日期编码压印在车框后轮轴横杆上或在车框背后右后轮和座位之间的竖杆上。
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