| 摘要 |
PURPOSE:To prevent car accident when it is turning to the left, in the case of left side traffic, by providing a special alarm for this purpose. CONSTITUTION:Whan a car is turning to the left, in the case of left side traffic, and the winker button is pushed, an alarm device fixed around the front wheel or side mirror on the left hand shall give an alarming sound, automatically in linkage with operation of the winker button. |
