It is used to indicate dangerous materials, and warning signs for office ares, parking lot, warehouse lines, engineering, and car end ect.

用于危险物品标示、办公室、停车位、仓库划线、工程、车尾末端警示作用。标准色样：白红、白绿、黄黑。、黑白、黄、兰、白、红、绿等。

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Automobile intelligence already assists the driving experience by warning of dangerous situations and taking control of parking, which is, for some people, the most difficult maneuver to perform.

ENGADGET: Editorial: Self-driving cars FTW, but not for everybody

It said more cars parking for longer, made an already busy road even more dangerous.

BBC: Colebrook, 2 May 2013

Here Mother shops, driving 30 yards from mall to mall because the huge sea of parking lots is at best unpleasant to walk across and at worst dangerous.

ECONOMIST: On the edge of town