The Tamil Nadu police are using Artificial Intelligence (AI) for crowd and vehicle management at the Kathigai Deepam festival in Tiruvannamalai on December 3, 2025. Lakhs of people will attend this year, and this is the first time AI technology is being applied for crowd control in the state. Experts who worked with AI tools during the Kumbh Mela in Prayagraj earlier this year helped implement this system. Hundreds of CCTV cameras across key locations like the Arunachaleswarar Temple and surrounding roads feed real-time data into the control room. Last year, police relied on live CCTV footage alone. This time, AI alerts will warn them about potential overcrowding or stampedes. The system triggers alerts when crowd density crosses 4-5 people per square meter, which signals a risk. Assistant Superintendent of Police Dhanush Kumar said, "With the AI-driven technology, we will have the exact number of people or vehicles in a location at any given point of time. The accuracy will be about 95%. This data is crucial to assess the number of people at different locations and regulate the crowd accordingly. 4 people in one square metre is a red flag for us and a potential stampede situation. Special teams have been stationed at different locations for responding to crowd density alerts." Police teams managing vehicle traffic will get alerts from AI tools showing how many vehicles enter the town and use parking spots. Cameras cover 35 parking areas and 11 main bus stands. Drones will provide live aerial footage to monitor the festival area continuously. Telephone booths with hotlines will connect the public to the police control room at 10 key points. Top officials including Inspector-General of Police Asra Garg and Superintendent of Police M. Sudhakar reviewed the security plans. The 'Deepam 2025' app offers devotees details about medical camps, ambulance locations, food distribution points, and emergency contacts. Real-time data from AI systems will also be accessible via the app. This smart setup aims to make Kathigai Deepam safer and more organized than ever.