Why a metro operator is a distinct rail risk, not a highway or a factory
India's operational metro network reached about 1,095 km across 26 cities by 2025, with more than 300 km due to open through 2026 and a Union Budget 2025-26 metro and urban transport allocation of INR 34,807 crore (PIB). New sections opened or advanced in Mumbai, Bengaluru, Bhopal and Indore during this window. For brokers, the temptation is to treat a metro authority like any other large infrastructure account and reach for a standard contractors all-risks slip. That misreads the exposure.
A metro operator carries three risk phases at once, often on the same corridor in the same year. The construction phase mixes deep tunnelling, elevated viaduct casting over live roads, and station boxes in dense city centres. The commissioning phase brings rolling stock, third-rail or overhead traction, and signalling into an untested system. The operational phase runs high-frequency passenger services where a single platform incident can produce mass casualty claims and a service suspension that stops fare revenue across the line.
A highway BOT toll-road operator shares the construction and third-party themes but has no rolling stock, no signalling network, and no crowded platform liability. A factory carries machinery breakdown and business interruption but nothing like the moving-public exposure of a metro. The metro sits between engineering, property and casualty lines, and a programme built from one line alone will leave gaps. This profile walks the exposures in the order they arise, from the tunnel boring machine to the passenger on the platform, and flags where wordings decide whether a claim is paid.
TBM tunnelling and viaduct EAR over live city corridors
The underground segments of Mumbai, Bengaluru, Kolkata and Chennai metros are driven by tunnel boring machines (TBMs) working under occupied buildings, heritage structures and live utilities. This is the sharpest engineering exposure on the account and it sits in an Erection All Risks (EAR) or Contractors All Risks (CAR) policy, filed by insurers under the IRDAI Use and File route. The physical damage section covers the TBM, the segmental tunnel lining, and the works, but the loss modes are specific: face collapse, over-excavation and ground loss, sinkhole formation at the surface, hyperbaric intervention failures, and TBM entrapment where the cutter head jams in mixed strata.
Elevated corridors add a different signature. Segmental box girders are cast at a yard and launched over live carriageways, so the exposure includes launching-girder collapse, dropped segments onto traffic below, and pier foundation failure. Underwriters price the maximum probable loss around a single-span collapse plus the third-party consequences beneath it.
Two scope questions decide the quality of the cover. First, is the sum insured set on a full reinstatement value basis including escalation, given multi-year drives where steel and lining costs move. Second, does the policy carry an adequate Delay in Start-Up (DSU) or ALOP section, since a tunnel collapse delays revenue service by quarters, not weeks. Our note on contractors erection all-risks with ALOP sets out how the physical damage and delay triggers must align, and metro programmes fail most often at that seam.
Third-party and public liability during construction in dense corridors
A metro is built through the busiest parts of a city, so the third-party exposure during construction rivals the physical damage exposure in size. The Third Party Liability (TPL) section of the EAR or CAR policy responds to bodily injury and property damage to the public arising out of the works: ground settlement cracking adjacent buildings, utility strikes cutting water or gas mains, barricade collapse, and pedestrians or vehicles struck by falling material.
The cracking-buildings exposure is the one brokers underestimate. TBM drives and deep station excavations cause differential settlement across a zone of influence, and a cluster of adjoining owners can file damage claims that are individually modest but collectively large. The TPL limit and the cross-liability and vibration, weakening or removal of support positions in the wording decide whether these are met or excluded. Many standard EAR wordings carry a support-and-vibration exclusion that must be bought back for tunnelling work.
Where the works handle hazardous substances above notified quantities, for example bulk fuel or certain chemicals at a casting yard, the Public Liability Insurance Act, 1991 imposes no-fault liability and a statutory PLI policy with Environment Relief Fund contribution sits alongside the EAR TPL section. That statutory cover is thin and limit-bound, so it does not replace a properly sized project TPL layer. See our Public Liability Insurance Act compliance guide for the notified-quantity triggers.
Contractor tiers complicate the picture. A metro has a main civil contractor, tunnelling and viaduct sub-packages, and utility diversion agencies, each with its own insurance. Brokers should confirm principal-and-contractors (PAC) cover names the metro authority as principal, that waiver of subrogation against co-insureds is in place, and that certificates of insurance from every tier are held before enabling works start.
Rolling stock, traction and signalling: machinery breakdown once operational
When trains start running, the risk profile shifts from earthworks to precision machinery. Rolling stock, traction power and signalling are high-value, technology-dense assets where the dominant peril is sudden and unforeseen mechanical or electrical failure rather than fire or flood. This is Machinery Breakdown (MB) and Electronic Equipment Insurance (EEI) territory, not fire-policy territory, and a metro programme that insures only the material damage under a fire policy will find the largest operational losses fall outside cover.
Rolling stock exposure includes traction motor and gearbox failure, bogie and axle defects, propulsion converter and auxiliary inverter burnout, and battery and pantograph or third-rail shoegear damage. Depot fires and washing-plant incidents add a property element. Because trainsets are often supplied and maintained under long-term contracts, the broker must map which failures the manufacturer's maintenance agreement absorbs and which fall to the operator's MB cover, so the two do not overlap or leave a gap. Our guide to [machinery breakdown underwriting for process industries](/underwriting-risk/machinery-breakdown-underwriting-process-industries-india-2026) covers the sudden-and-unforeseen test that governs these claims.
Signalling is the concentrated exposure. Modern metros run Communications Based Train Control (CBTC) with track-side radio, interlockings, axle counters and an operations control centre. A failure in the central signalling system does not damage one train, it can halt the whole line. That makes signalling a candidate for machinery loss of profits and, where an external power grid or telecom feed fails, contingent business interruption. Traction power (rectifier substations, third rail or 25 kV overhead, SCADA) carries boiler and pressure plant analogues in the transformer and switchgear, and a substation loss can strand a section of line. Underwriters increasingly ask for condition-monitoring and spares-holding data before setting MB rates and the machinery loss-of-profits indemnity period.
Station property, fire and passenger public liability with contingent BI
Stations are the operator's public face and its densest liability zone. Property exposure runs across underground and elevated station structures, escalators and lifts, platform screen doors, automatic fare collection gates, ventilation and tunnel ventilation fans, and retail concessions. A fire policy with the standard perils, plus a separate MB and EEI schedule for the electromechanical plant, forms the property core. Underground stations concentrate value and life-safety risk, so fire engineering, smoke extraction and evacuation compliance drive both the premium and the insurability.
The defining casualty exposure is passenger liability. A metro carries very high daily footfall, and incidents on platforms, escalators, staircases and inside trains produce bodily-injury claims. Operational metros are governed by the Metro Railways (Operation and Maintenance) Act, 2002, which carries an accident-compensation framework broadly parallel to the no-fault liability under the Railways Act, 1989. That statutory compensation sits over and above common-law negligence claims, and both must be met from the operator's public liability and passenger liability programme. Crowd-crush during a service disruption is a tail scenario brokers should test the limit against; our note on crowd and event public liability is a useful reference point for footfall exposures.
The business-interruption dimension is unusual. A serious incident, a signalling failure or a fire can suspend service across a line, cutting fare and non-fare (retail, advertising) revenue. Business interruption on the property side and contingent BI for external power or telecom dependency should be sized to the daily revenue of the affected corridor, with an indemnity period long enough to cover investigation, repair and safety re-certification before services resume.
Structuring the programme and closing the construction-to-operation gap
The recurring failure on metro accounts is the handover seam. A metro line moves from a project EAR or CAR policy into an operational property, machinery and liability programme, often section by section as the line opens in phases. If the EAR maintenance period lapses on a completed section before the operational cover incepts, or if the two policies define the insured asset differently, a loss in that window can fall between them. Our analysis of the construction-to-operational handover gap sets out the extended maintenance and testing extensions that keep the two policies overlapping rather than abutting.
A sound metro programme separates into aligned layers. The engineering layer holds EAR or CAR with tunnelling and viaduct extensions, DSU or ALOP, TPL, and a Contractors Plant and Machinery section for TBMs and cranes. The operational layer holds fire and property on stations and depots, MB and EEI on rolling stock, traction and signalling, and machinery loss of profits with a matched indemnity period. The casualty layer holds public and passenger liability, statutory PLI where notified quantities apply, and directors and officers cover for the metro corporation's board.
Three structuring checks decide programme quality. First, sum insured adequacy on a reinstatement basis, since under-insurance triggers the average clause and a metro's replacement values move over multi-year builds. First-loss limits on TPL should be stress-tested rather than assumed. Second, deductible and time-excess coordination, so the DSU waiting period, the MB indemnity period and the BI indemnity period do not leave uncovered days. Third, reinsurance-driven wording alignment. Metro risks are large enough to be facultatively reinsured, and treaty or fac wordings imported from the reinsurer can carry exclusions the local slip does not. The broker should read the operative wording, not the marketing summary.
Reading metro wordings before the loss, with Sarvada
Metro programmes are decided at the wording level. Whether a settlement claim from adjoining owners is met, whether a signalling failure triggers machinery loss of profits, whether the DSU section aligns with the physical damage trigger, and whether a completed section stays covered through handover all turn on specific clauses, extensions and exclusions that differ across insurers and across renewal years. Two insurers can quote the same headline rate on a tunnelling EAR while carrying materially different support-exclusion buy-backs, defects wordings and DSU waiting periods, and that difference only surfaces when a claim is filed.
That is a difficult thing to check under renewal time pressure, when the broker is comparing several long wordings against a project brief and a reinsurer's fac terms. The detail that decides a metro claim is rarely in the quote summary; it is in the operative clause and the schedule of exclusions.
Sarvada gives brokers and risk managers searchable access to Indian insurer policy wordings, so a metro exposure can be checked clause by clause before binding rather than after a loss. You can compare how different insurers treat the vibration and support exclusion on tunnelling EAR, how their MB wordings define sudden and unforeseen failure for rolling stock, how passenger and public liability sections read against the Metro Railways (Operation and Maintenance) Act framework, and where the construction-to-operation extensions actually sit. To see how wordings intelligence supports your metro and infrastructure book, Request Access.