| 摘要 |
There is at least one support which has at least one part of the plan. The support carries marks or symbols defining a number of zones or areas which correspond to the points of interest and those zones which can influence traffic such as danger zones, congestion zones and free flow traffic zones. - The zones can be described in frequency and in duration. The maps can accompany a book or brochure which lists details of the zones of influence.
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