law: 17. Preparation of Sub-Regional Plans.
  (1)  Each participating State shall prepare aSub-Regional Plan for the sub-region within the State and the Union territory shall prepare a Sub-RegionalPlan for the sub-region within the Union territory.
  (2) Each Sub-Regional Plan shall be a written statement and shall be accompanied by such maps, diagrams, illustrations and descriptive matters as the participating State or the Union territory may deem appropriate for the purpose of explaining or illustrating the proposals contained in such Sub-RegionalPlan and every such map, document, illustration and descriptive matter shall be deemed to be a part of the Sub-Regional Plan.
  (3) A Sub-Regional Plan may indicate the following elements to elaborate the Regional Plan at thesub-regional level, namely:
  (a) reservation of areas for specific land-uses which are of the regional or sub-regionalimportance;
  (b) future urban and major rural settlements indicating their area, projected population, predominant economic functions, approximate site and location;
  (c) road net-work up to the district roads and roads connecting major rural settlements;
  (d) proposals for the co-ordination of traffic and transportation, including terminal facilities;
  (e) priority areas at sub-regional level for which immediate plans are necessary;
  (f) proposals for the supply of drinking water and for drainage; and
  (g) any other matter which is necessary for the proper development of the sub-region.