3.1.1 Functional Classification
Classification systems vary from one road/traffic agency to another. Some use a three-level classification system, while others use four or five levels. Similarly, the terminology used to describe the road classes varies. It is useful to treat motorways as a distinct class because of their pure mobility function with no access function. Discussion of traffic management strategies in this Guide is therefore based on the following four-level functional classification system:
- arterial roads
- distributor/collector roads
- local roads and streets.