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5 Major Classes of Roads

By: Haseeb Jamal / On: Dec 03, 2017 / Roads
Classes of Roads

Following are the major classes of Roads:

  1. Trunk Roads
  2. Primary Distributor Roads
  3. District Distributor Roads
  4. Local Distributor Roads
  5. Residential Access Roads

Class 1 - Trunk roads (Freeways, national, provincial and inter-regional roads)

Their main function is to facilitate regional distribution of traffic (intercity movement). They may be national or provincial roads and the type of facilities found in this class are freeways, expressways, dual carriageways and single carriageway main roads.

Class 2 - Primary distributors (Urban freeways, urban expressways and major arterials)

This class of road forms the primary network for the urban area as a whole.  All long distance traffic movements to, from and within the city should be focused onto such roads. Characteristics are high volumes, restricted access and fairly high speeds. Continuity of route is important.

Class 3 - District Distributors (Minor arterials and major collector roads)

These roads distribute traffic between the various residential, industrial and principal business districts of the town and form the link between the primary network and the roads within residential areas.

Class 4 - Local Distributors (Minor collectors and collector streets)

Local distributors are "local" through-roads which distribute traffic within communities and link district distributors. Local bus services are routed along this class of road. The local distributor should carry traffic from a housing module of more than 400 and up to about 1 500 dwelling units.

Class 5 - Residential Access Roads (Lightly trafficked roads and local streets)

These roads give people direct access to buildings and land within environmental areas. Access for motor vehicles is not their only function. They are used by the inhabitants for other work, or leisure-time activities such as walking, jogging and playing, as well as for the provision and maintenance of services to houses

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