Renewing a driving license (DL) in India is crucial for legal compliance. Private DLs are valid for 20 years or until age 40-50, while commercial DLs require renewal every 3-5 years. Applications can be made up to a year before expiry, with a 30-day grace period post-expiry. The process is largely digital via the Sarathi Parivahan portal. Eligibility requires an un-suspended license, and a medical certificate is mandatory for those over 40. Key documents include the existing DL, application forms, fitness declarations, and proof of address.