Maryland Land Use Section 4.03
§ 4.03.
  (a)   The regulations adopted by a local legislative body shall be adopted:
    (1)   In accordance with the plan;
    (2)   With reasonable consideration for, among other things, the character of the district and its suitability for particular uses; and
    (3)   With a view to conserving the value of buildings and encouraging orderly development and the most appropriate use of land.
  (b)   The regulations shall be designed to:
    (1)   Control congestion in the streets;
    (2)   Secure the public safety;
    (3)   Promote health and the general welfare;
    (4)   Provide adequate light and air;
    (5)   Promote the conservation of natural resources;
    (6)   Prevent environmental pollution and avoid undue concentration of population; and
    (7)   Facilitate the adequate provision of transportation, water, sewerage, schools, recreation, parks and other public requirements.