P.Dharni & Ors vs Govt.Of T.Nadu & Ors

The Supreme Court addressed the promotion eligibility criteria for the post of Regional Transport Officer under the Tamil Nadu Transport Subordinate Service Special Rules framed under Section 42. The Court held that promotions from Motor Vehicles Inspector (Grade II) to Grade I must be based on merit and ability, with seniority considered only when merit is equal. The Court affirmed that the rules clearly stipulate that the promotion process is exclusive and must adhere to the prescribed qualifications and methods, thereby upholding the integrity of the promotion system.