Common Abbreviations & Transport Systems in India

Part A: Common Abbreviations (high-frequency exam list)

Government & Political

• PM — Prime Minister
• CM — Chief Minister
• MP — Member of Parliament
• MLA — Member of Legislative Assembly
• MLC — Member of Legislative Council
• IAS — Indian Administrative Service
• IPS — Indian Police Service
• IFS — Indian Foreign Service / Indian Forest Service
• CAG — Comptroller and Auditor General
• CVC — Central Vigilance Commission
• CBI — Central Bureau of Investigation
• NIA — National Investigation Agency
• UPSC — Union Public Service Commission
• ECI — Election Commission of India

Financial & Economic

• RBI — Reserve Bank of India
• SBI — State Bank of India
• SEBI — Securities and Exchange Board of India
• IRDAI — Insurance Regulatory and Development Authority of India
• GST — Goods and Services Tax
• GDP — Gross Domestic Product
• GNP — Gross National Product
• FDI — Foreign Direct Investment
• FII — Foreign Institutional Investment
• NPA — Non-Performing Asset
• CRR — Cash Reserve Ratio
• SLR — Statutory Liquidity Ratio
• KYC — Know Your Customer
• IFSC — Indian Financial System Code
• NEFT — National Electronic Funds Transfer
• RTGS — Real Time Gross Settlement
• UPI — Unified Payments Interface
• PAN — Permanent Account Number
• IMF — International Monetary Fund
• WTO — World Trade Organization

Science & Technology

• ISRO — Indian Space Research Organisation
• DRDO — Defence Research and Development Organisation
• BARC — Bhabha Atomic Research Centre
• CSIR — Council of Scientific and Industrial Research
• AI — Artificial Intelligence
• IoT — Internet of Things
• CPU — Central Processing Unit
• RAM — Random Access Memory
• ROM — Read Only Memory
• URL — Uniform Resource Locator
• HTTP/HTTPS — HyperText Transfer Protocol (Secure)
• USB — Universal Serial Bus
• LED — Light Emitting Diode
• LASER — Light Amplification by Stimulated Emission of Radiation
• RADAR — Radio Detection and Ranging
• SONAR — Sound Navigation and Ranging

International Organisations

• UN — United Nations
• UNESCO — United Nations Educational, Scientific and Cultural Organization
• UNICEF — United Nations Children's Fund
• WHO — World Health Organization
• NATO — North Atlantic Treaty Organization
• SAARC — South Asian Association for Regional Cooperation
• ASEAN — Association of Southeast Asian Nations
• OPEC — Organization of the Petroleum Exporting Countries
• BRICS — Brazil, Russia, India, China, South Africa
• IAEA — International Atomic Energy Agency

Miscellaneous Common Ones

• NGO — Non-Governmental Organisation
• NCC — National Cadet Corps
• NSS — National Service Scheme
• CCTV — Closed-Circuit Television
• ATM — Automated Teller Machine
• SIM — Subscriber Identity Module
• OTP — One Time Password
• PDF — Portable Document Format
• FAQ — Frequently Asked Questions
• VIP — Very Important Person
• FIR — First Information Report
• PIL — Public Interest Litigation
• RTI — Right to Information

Part B: Transport Systems in India

Railways

• Indian Railways: one of the largest railway networks in the world, under the Ministry of Railways; managed via Railway Board.
• First train in India: ran between Bombay (Bori Bunder) and Thane, 16 April 1853.
• Indian Railways divided into Zones: 18 zones (e.g., Northern Railway - HQ Delhi, Southern Railway - HQ Chennai, Western Railway - HQ Mumbai, Eastern Railway - HQ Kolkata) each headed by a General Manager.
• Metro Rail: Kolkata Metro was India's first metro (1984); Delhi Metro is the largest network.
• Vande Bharat Express: India's first semi-high-speed indigenous train (introduced 2019), engineered by ICF Chennai.
• Konkan Railway: connects Maharashtra, Goa, Karnataka along the western coast, known for engineering feats.
• Mountain Railways of India (UNESCO sites): Darjeeling Himalayan Railway, Nilgiri Mountain Railway, Kalka-Shimla Railway.
• Bullet Train Project: Mumbai-Ahmedabad High-Speed Rail Corridor, Indo-Japanese collaboration.
• Dedicated Freight Corridors: Eastern and Western DFCs for freight-only movement.
• RailTel, IRCTC, CONCOR: important railway-linked PSUs (Indian Railway Catering and Tourism Corporation handles ticketing/catering; Container Corporation of India handles freight containers).

Roadways

• India has one of the largest road networks in the world.
• Classified into: National Highways (NH — maintained by NHAI, National Highways Authority of India), State Highways, District Roads, Rural/Village Roads.
• Golden Quadrilateral: connects Delhi-Mumbai-Chennai-Kolkata, largest highway project in India, launched under PM Atal Bihari Vajpayee.
• NH 44: longest national highway in India (Srinagar to Kanniyakumari).
• Bharatmala Pariyojana: umbrella program for highway development (2017).
• Pradhan Mantri Gram Sadak Yojana (PMGSY): 2000, rural road connectivity.

Waterways

• National Waterways: inland water transport routes; NW-1 (Ganga-Bhagirathi-Hooghly river system) is a major one.
• Major Ports: 12 major ports including Mumbai, Jawaharlal Nehru Port (Nhava Sheva — largest container port), Chennai, Kolkata (only major riverine port), Vishakhapatnam, Kandla (Deendayal Port), Kochi, Paradip, Tuticorin.
• Sagarmala Programme: 2015, port-led development and modernisation.
• Shipping Corporation of India: major shipping PSU.

Airways

• Air India: India's flag carrier (originally founded by J.R.D. Tata as Tata Airlines, 1932); privatised again in 2022 (acquired by Tata Group, returning to Tata ownership).
• Airports Authority of India (AAI): manages civil aviation infrastructure.
• Indira Gandhi International Airport (Delhi): busiest airport in India.
• UDAN Scheme (2016): regional connectivity scheme, "Ude Desh ka Aam Naagrik," aims to make air travel affordable.
• DGCA (Directorate General of Civil Aviation): regulatory body for civil aviation.

Urban/Public Transport

• Delhi Metro Rail Corporation (DMRC): operational since 2002.
• BRTS (Bus Rapid Transit System): implemented in several Indian cities (Ahmedabad's is notable).
• Growing adoption of electric buses/vehicles under FAME India Scheme (Faster Adoption and Manufacturing of Electric Vehicles).