Functional class is a road type indicator, reflecting traffic speed and volume, as well as the importance and connectivity of the road.

FunctionalClassType is a value of the type xs:byte. The following values are supported:

• 1: a road with high volume, maximum speed traffic
• 2: a road with high volume, high speed traffic
• 3: a road with high volume traffic
• 4: a road with high volume traffic at moderate speeds between neighborhoods
• 5: a road whose volume and traffic flow are below the level of any other functional class

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