TRAI Reveals Findings from Extensive Drive Tests in Bihar
The Telecom Regulatory Authority of India (TRAI) has released the results of its Independent Drive Test (IDT) conducted in Bihar, focusing on the Hazaribagh district and surrounding areas, as well as key highway and railway routes. This comprehensive testing took place from November 20 to November 28, 2025, and aimed to evaluate the performance of mobile networks in diverse environments including urban areas, business districts, and on public transport routes.
During this period, TRAI’s test teams covered an impressive 220.9 kilometers of city routes, 327.5 kilometers of highway along NH-19, 20, and 22, and 376.9 kilometers of railway routes from Patna to Ranchi. The evaluation included a rigorous analysis of voice and data services, assessing multiple technologies such as 2G, 3G, 4G, and 5G. The results provide insights into user experiences across various mobile devices.
Key Performance Metrics
The key parameters measured in the drive tests included:
- Voice Services: Call Setup Success Rate (CSSR), Drop Call Rate (DCR), Call Setup Time, Call Silence Rate, Speech Quality (Mean Opinion Score), and Coverage.
- Data Services: Metrics such as Download and Upload Throughput, Latency, Jitter, Packet Drop Rate, and Video Streaming Delay.
The IDT results revealed significant variations in performance across different service providers in the region. For instance, Airtel achieved a commendable 99.65% CSSR in urban areas but struggled with a 1.82% DCR. Meanwhile, BSNL’s performance fell short with an overall CSSR of 57.80% in city areas. RJIL and VIL also showed differing results, emphasizing the competitive landscape of mobile service quality in Bihar.
Mobile Network Performance Summary
Below are some performance statistics from the drive tests:
| Service Provider | Call Setup Success Rate (City) | Drop Call Rate (City) | Overall Performance |
|---|---|---|---|
| Airtel | 99.65% | 0.00% | 96.63% |
| BSNL | 72.14% | 8.54% | 57.80% |
| RJIL | 99.66% | 0.34% | 99.21% |
| VIL | 89.31% | 7.75% | 82.99% |
The tests also highlighted that 5G data services were able to deliver maximum average speeds of 199.26 Mbps for downloads and 24.47 Mbps for uploads in the overall assessments. However, signal strength issues were reported with varying percentages of poor reception across different providers.
Areas Covered in the Drive Tests
The testing encompassed numerous key locations in Hazaribagh district, including Hadri, Daru, and various educational institutions such as the Birla Institute of Technology, among others. The assessment included both static and walk tests to ensure a comprehensive review of network performance under real-world conditions.
For further details, interested individuals can access the full report on the TRAI website or contact TRAI’s regional office in Kolkata for any queries. The findings underscore the ongoing efforts to enhance mobile connectivity across India, reflecting TRAI’s commitment to ensuring quality telecom services for all users.
Observer Voice is the one stop site for National, International news, Sports, Editor’s Choice, Art/culture contents, Quotes and much more. We also cover historical contents. Historical contents includes World History, Indian History, and what happened today. The website also covers Entertainment across the India and World.
