Road Function

(residence / access versus guidelines for planning (road characteristics;

traffic / flow functions)

technical layout)

Figure 3.2. Relationships between road function, design (technical layout), and traffic use (elaborated from [3]).

collector roads and access roads to adjacent land, housing developments, and agricultural, forestry, and industrial sites.

For every road link in the network, a mutual harmony must exist between desired function, technical layout, and traffic characteristics. Figure 3.2 illustrates these relationships.

The next section (3.2.2) deals with the different networks that generally occur. Section 3.2.3 discusses possible rural road classification systems, and finally, Section 3.2.4 briefly indicates the traffic problems to be solved with traffic planning.

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