| 英文摘要 |
When a road is under construction, traffic cones are often placed on the road for separation and warning purposes in order to prevent cars or pedestrians from wrongly entering the construction area. Since the traffic cones are conventionally arranged by manpower, it takes considerable time to place the traffic cones on the road one by one when the construction area of the road is in a great length. In addition, it is not easy to orderly place the traffic cones on the road, so that a significant amount of time is consumed in placing the traffic cones. Thus, considerable time and effort is consumed. |
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