Delhi Bus Route Numbers Decoded: Prefix Letters, STL, Mudrika & Loop Codes
Learn how to read Delhi bus route numbers: 3-digit origin codes, suffix letters (A, B, C), Short Trips (STL), Extensions (EXT), and circular Mudrika services.
- The first digit of standard routes represents the originating Delhi sector (1xx: North, 2xx: East, 5xx: South, 7xx: West, 9xx: North-West).
- Mudrika (Ring Road) and OMS (Outer Mudrika) are circular routes navigating Delhi’s concentric beltways.
- Suffixes like "A" or "B" indicate route divergences, while "STL" indicates short-turn services ending before the terminal.
- Night services use a "0-" prefix (e.g., 0-772, 0-OMS) and operate from 11:00 PM to 5:00 AM.
Sector-Based 3-Digit Numbering Hierarchy
Delhi bus routes follow a logical geographic numbering system designed to help commuters immediately identify the corridor.
| Digit Prefix | Primary Geographic Sector | Key Terminals |
|---|---|---|
| 100 Series | North Delhi & Old Delhi | Kashmere Gate, Narela, Alipur, Jahangirpuri |
| 200 Series | East Delhi & Trans-Yamuna | Anand Vihar ISBT, Shahdara, Mayur Vihar, Trilokpuri |
| 300 Series | Central Delhi & Railway Connectors | Connaught Place, New Delhi Rly Stn, Old Delhi Rly Stn |
| 400 & 500 Series | South Delhi & Faridabad Border | Nehru Place, Badarpur, Mehrauli, Saket, Sarai Kale Khan |
| 600 Series | South-West Delhi & Vasant Kunj | Vasant Kunj, Munirka, RK Puram, Safdarjung |
| 700 Series | West Delhi & Dwarka Sub-City | Uttam Nagar, Dwarka Sec-21, Najafgarh, Janakpuri |
| 800 & 900 Series | North-West Delhi & Outer Delhi | Rohini, Nangloi, Peera Garhi, Tikri Border |
Special Service Codes: Mudrika, OMS, and STL
Mudrika Seva: The iconic circular route traversing Delhi’s Inner Ring Road connecting AIIMS, Dhaula Kuan, Punjabi Bagh, Azadpur, and Kashmere Gate.
Outer Mudrika (OMS): Runs along the 48-kilometer Outer Ring Road loop.
Short Turn Trips (STL): Trips designated as STL truncate before the full route endpoint during morning peak hours to increase turnaround frequency.
Frequently Asked Questions
Frequently Asked Questions
What does "STL" mean on a Delhi bus display?
What is the difference between Route 772 and Route 772A?
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