日本財団 図書館


 

Figure 10  Precautionary area with recommended direction of

traffic flow around an area to be avoided

 

Figure 11  Precautionary area at a junction, with

recommended directions of traffic flow

It may be best, when routes converge, to terminate them clear of their potential joining points and in such a case a precautionary area (9) can be instituted so as to emphasize the need for care in navigation. Figures 9 and 10 illustrate the use of such an area at focal points; a direction of traffic flow may be recommended (2) around the focal point, as shown in figure 10.

Figure 11 gives an example of how a precautionary area (9) can be used at a junction with crossing traffic. The traffic lanes are terminated short of the point where traffic is expected to cross and replaced by a precautionary area within which the recommended directions of traffic flow (2) are indicated.

Precautionary areas may also be used at the termination of any single route.

 

 

 

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