2. Data to be considered in projects
The definition of the road's geometric characteristics presupposes the prior selection of a certain number of basic data, the most essential of which are as follows:
traffic ;
project speed ;
stopping distances, overtaking distances and visibility.
2.1 Traffic
The level of traffic is the main factor to be taken into account when defining the cross-section of the roadway and, more generally, when choosing the type of layout to be selected. However, it covers a complex reality.
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Data to be considered in projects
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