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Respected Shri Ashwini Vaishnawji,
Minister of Railways & Minister of Electronics and Information Technology
Government of India
Sub: Repurposing Mumbai Metro's newly deployed AI Pantograph Monitoring Infrastructure to build a National Track Intrusion Detection System (TIDS) — augmented by a personalised, multilingual Mobile Scream Alert
Namaskar,
I write to you as a long-time citizen-technologist who has been advocating technology-driven solutions to India's railway safety challenges.
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PART A — MY ORIGINAL SUGGESTION (2016)
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Nearly nine years ago, I wrote to the Ministry of Railways suggesting a novel — if admittedly provocative — deterrent against reckless track-crossing: a Controlled Electromagnetic Pulse (EMP) pulsing through the rails at low voltage, strong enough to disable the mobile phone of a trespasser but harmless to the human body or to passengers aboard the train (due to the 'skin effect' of the metal coach shell).
The full text of that suggestion is available here:
https://myblogepage.blogspot.com/search?q=EMP+Electo+Magnetic+Pulse
And in my LinkedIn article "Indian Railways: A Trillion Dollar Opportunity":
https://www.linkedin.com/pulse/indian-railways-trillion-dollar-opportunity-hemen-parekh
I called it a "Digital Death" for the trespasser — the loss of a smartphone being, for today's generation, almost as shocking a deterrent as a physical consequence, yet entirely non-lethal.
I readily acknowledged the engineering paradox: a "low-voltage EMP" is, in strict physics, a contradiction in terms — and challenged India's scientific community to resolve it. Evidently, no taker was found, and the idea remained on paper while trespassing deaths continue to mount year after year.
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PART B — THE NEW OPPORTUNITY: WHAT MUMBAI METRO JUST DEPLOYED
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Three days ago, MMRDA announced India's first Automated Pantograph Condition Monitoring System (APCMS) across the Mumbai Metro network — a wayside AI system using high-speed laser scanners, precision 3D imaging, and machine learning to inspect every passing train's pantograph in real time, reducing inspection time by 95%.
This is an extraordinary technological achievement. But as I read the announcement, a question immediately presented itself:
"If this same sensor stack can see a hairline crack on a carbon strip
moving at 80 km/h — why can't it see a human being standing on the track?"
The answer is: it can. With a straightforward repurposing.
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PART C — THE NEW SUGGESTION: TRACK INTRUSION DETECTION SYSTEM (TIDS)
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I respectfully propose that the Ministry of Railways, in coordination with MeitY, direct MMRDA and Indian Railways' RDSO to evaluate the following extension of the APCMS platform:
1. REORIENT A SUBSET OF SENSORS TOWARD THE TRACK BED
The APCMS laser scanners and imaging systems currently face upward/outward to capture pantograph geometry. Additional wayside sensor units — using the identical hardware and AI inference stack — can be mounted to scan the track corridor (typically a 3–5 metre envelope). Any human-shaped object breaking the geometric boundary triggers an immediate cascade of alerts.
2. TRAIN THE AI ON HUMAN SILHOUETTES
The ML models already running on the APCMS platform can be fine-tuned with a classification layer: distinguish between "train passing," "debris," "animal," and "human trespasser." This is standard computer vision work. Similar systems protect airport runways worldwide (Runway Incursion Detection) and industrial rail yards.
3. FOUR-TIER REAL-TIME RESPONSE — IN MILLISECONDS
Upon detecting a human intruder in the track envelope:
— Tier 1: High-decibel directional siren at the intrusion point
(startles the person, draws bystander attention)
— Tier 2: THE MOBILE SCREAM 📱
This is the most powerful — and most humane — deterrent of all.
The TIDS system, upon detecting an intruder, instantly triggers a
geo-targeted emergency alert to every mobile phone within a
5-metre radius of the track intrusion point.
Using India's existing Cell Broadcast Alert (CBA) infrastructure
— the same NDMA system used for earthquake and cyclone warnings,
requiring NO internet, NO app, NO prior opt-in — the person's
phone SCREAMS at them, in their own language:
┌─────────────────────────────────────────────────────────┐
│ 🚨 HINDI: │
│ "रुको! घर पर तुम्हारे बच्चे तुम्हारा इंतज़ार कर रहे │
│ हैं। उन्हें अनाथ मत करो।" │
│ │
│ 🚨 MARATHI: │
│ "थांबा! घरी तुमची मुले तुमची वाट पाहत आहेत. │
│ त्यांना पोरके करू नका." │
│ │
│ 🚨 ENGLISH: │
│ "STOP. Your children are waiting for you at home. │
│ Don't make them wait forever. A train is approaching."│
└─────────────────────────────────────────────────────────┘
The SIM card's registered language preference — already known
to the telecom carrier — determines which language plays first.
All three languages play in sequence. Total audio duration: 8 seconds.
Eight seconds is all it takes to save a life.
This is not science fiction. Cell Broadcast technology is already
operational in India. TRAI has the regulatory framework. What is
needed is a dedicated TIDS trigger channel, authorised jointly
by the Ministry of Railways and MeitY, connected to the carrier
Cell Broadcast Centres via a real-time API.
— Tier 3: Automatic red signal / emergency brake advisory
to the approaching loco pilot
— Tier 4: Geo-tagged RPF alert with camera snapshot of the intruder,
enabling follow-up enforcement and deterrence through social awareness
4. LEVERAGE EXISTING INVESTMENT
Since APCMS infrastructure (power, data backhaul, AI compute, maintenance protocols) is already being installed station by station, the marginal cost of adding a TIDS module is a fraction of a greenfield deployment. The business case is therefore compelling.
5. SCALE TO INDIAN RAILWAYS
Mumbai Metro is the proof-of-concept laboratory. RDSO can standardise the TIDS specification and mandate it as part of every new wayside AI installation across Indian Railways — starting with the highest-fatality suburban corridors in Mumbai, Chennai, Kolkata, and Delhi.
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PART D — WHY NOW, WHY YOUR DESK
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India records the world's highest number of railway trespassing fatalities — consistently above 15,000 deaths per year by conservative estimates. Physical fencing of 68,000 km of track is financially and logistically impossible at any near-term horizon.
You, Respected Minister, sit at the intersection of both portfolios that make TIDS actionable today — Railways AND MeitY. The AI sensor stack is already procured and running. The Cell Broadcast infrastructure is already live. The institutional owner (MMRDA) is already a pioneer. The telecom carriers (Jio, Airtel, BSNL) already operate CBA centres under TRAI mandate.
All that is needed is a nudge — a joint directive from the Ministry of Railways and MeitY to:
(a) Direct RDSO to commission a 90-day technical feasibility study on TIDS as an APCMS extension.
(b) Authorise a dedicated TIDS trigger channel within India's Cell Broadcast Alert infrastructure, co-governed by Railways and MeitY.
(c) Invite TRAI, C-DOT, and IIT-Bombay's Railway Technology Cell to co-develop the multilingual Mobile Scream message library — covering all 22 scheduled languages of India.
(d) Use Mumbai Metro Line 2A/7 as the pilot corridor, where APCMS is already live, and where CR/WR suburban crossings have among the highest trespassing fatality rates in the country.
I have no commercial interest in this proposal. I am a citizen who is tired of reading about preventable deaths on our tracks — deaths that leave real children waiting at home for a parent who will never return.
The technology is here.
The infrastructure is being built.
The telecom pipes already exist.
The only thing missing is the will to point the sensors in the right direction — and to let a phone, in a mother tongue, speak the words that might make a person step back.
With deep respect and hope,
Hemen Parekh
www.HemenParekh.ai | www.IndiaAGI.ai
Mumbai
28 May 2026
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