CNG trucks face phase-out in Delhi-NCR as CAQM mandates shift to electric
The Commission for Air Quality Management (CAQM) in the National Capital Region and Adjoining Areas has directed a phased restriction on new registration of petrol, diesel, and CNG-powered light goods vehicles (LGVs) across Delhi-NCR, to be replaced by electric-only registration.
For N1-category LGVs (gross vehicle weight up to 3.5 tonnes), only electric vehicles will be eligible for new registration in Delhi from 1 January 2027, extending to Gurugram, Faridabad, Sonipat, Ghaziabad, and Gautam Buddh Nagar from 1 July 2027, and to the remaining NCR districts from 1 January 2028.
For N2-category LGVs (gross vehicle weight 3.5 to 7.5 tonnes), only electric vehicles will be permitted for new registration in Delhi from 1 January 2028.
CAQM noted that the electric N1 vehicle market is relatively mature, with multiple manufacturers offering electric models, while the electric N2 segment remains nascent, with negligible electric vehicle registrations recorded in that category to date.
From Diesel-Petrol to CNG to EV — Delhi's Precedent of Mandated Fuel Transitions
The current CAQM mandate is not Delhi's first judicially or administratively driven vehicle-fuel transition. In M.C. Mehta v. Union of India, the Supreme Court in 1998 ordered Delhi's entire city bus fleet to convert to single-fuel CNG mode, based on recommendations of the Bhure Lal Committee, establishing a template for using binding directions rather than market incentives to force a citywide fuel-technology shift.
Key Details
- The Supreme Court's 28 July 1998 order in the M.C. Mehta case directed Delhi's public bus fleet to convert fully to CNG by 31 March 2001, and barred buses older than eight years from plying after April 2000 unless running on CNG or another clean fuel
- The CNG conversion order followed the 1996-98 recommendations of the Bhure Lal Committee (Environment Pollution [Prevention and Control] Authority, EPCA) on Delhi's air quality
- Implementation delays led to repeated Supreme Court interventions holding governments and operators to account for non-compliance
- CAQM itself was constituted in 2021 to replace EPCA, which had operated since 1998 primarily under Supreme Court oversight
The 2026 EV-only mandate for LGVs follows the same regulatory template as the 1998 CNG order — a binding, government-directed fuel-technology mandate rather than a voluntary incentive scheme — but this time issued directly by the statutory CAQM rather than through continuing Supreme Court litigation.
Graded Response Action Plan (GRAP) — Air Quality Trigger Framework
GRAP is CAQM's stage-wise emergency response mechanism for Delhi-NCR, under which specific pollution-control actions are invoked (or pre-emptively invoked, based on forecast) once the Air Quality Index (AQI) crosses defined thresholds. It supplements longer-term structural measures like the LGV electrification mandate with short-term, reversible actions during acute pollution episodes.
Key Details
- GRAP Stage I ("Poor"): AQI 201-300; Stage II ("Very Poor"): AQI 301-400; Stage III ("Severe"): AQI 401-450; Stage IV ("Severe Plus"): AQI above 450
- Since 2021, GRAP has been implemented by CAQM (previously coordinated by EPCA); the current revised GRAP has been in force since October 2023
- Actions are invoked based on both the current AQI and IMD/IITM weather-forecast-based projections, allowing anticipatory (rather than purely reactive) restrictions
- Typical GRAP actions include restrictions on construction activity, older diesel vehicles, and (at higher stages) entry of non-essential trucks into Delhi
The LGV electrification mandate is a structural, year-round measure targeting a specific vehicle segment, distinguishing it from GRAP's temporary, AQI-triggered restrictions — together illustrating CAQM's two-track approach of permanent regulatory mandates plus emergency graded response.
Vehicle Categorisation and Electric Vehicle Market Readiness
Under the Central Motor Vehicles Rules, 1989, goods vehicles are classified by Gross Vehicle Weight (GVW) into categories including N1 (up to 3.5 tonnes) and N2 (3.5 to 7.5/12 tonnes). CAQM's phased timeline for the two categories reflects differing levels of electric vehicle market readiness between light last-mile delivery vehicles and heavier medium goods vehicles.
Key Details
- N1 category: GVW up to 3,500 kg, typically used for last-mile delivery, courier, and FMCG distribution
- N2 category: GVW 3,500-7,500 kg (up to 12,000 kg under some classifications), used for industrial and wholesale freight
- At the time of the directive, several registered manufacturers offered numerous electric N1 models in the market, indicating sufficient product availability for the first phase of restrictions
- The electric N2 segment was reported as far less developed, with very few electric N2 vehicles registered in Delhi-NCR and only a handful of manufacturers offering electric models in that category
CAQM's decision to impose the EV-only mandate on N1 vehicles one year ahead of N2 vehicles reflects a market-readiness-calibrated regulatory design — restricting the segment where electric alternatives are already commercially viable first, before extending the mandate to the less mature N2 segment.
National Clean Air Programme (NCAP) and Vehicular Pollution
The NCAP, launched by the Ministry of Environment, Forest and Climate Change in January 2019, is India's overarching national strategy for reducing particulate pollution in non-attainment cities, of which Delhi-NCR is a priority region. Vehicular emissions are one of the major identified sources of NCR's air pollution, alongside stubble burning, dust, and industrial sources.
Key Details
- NCAP covers 131 non-attainment and Million-Plus cities across 24 states/UTs, originally targeting a 20-30% reduction in PM2.5/PM10 concentrations by 2024 (from a 2017 base year)
- The target was subsequently revised to a 40% reduction in PM10 by 2026, or achievement of the national annual PM10 standard of 60 micrograms per cubic metre
- Non-attainment cities are defined as those that failed to meet National Ambient Air Quality Standards during 2011-2015
- CAQM's sector-specific directives, such as the LGV mandate, operate as implementation measures that feed into NCR cities' broader NCAP city action plans
The LGV electrification mandate is a targeted, sector-specific intervention addressing one of the vehicular pollution sources that NCAP city action plans are designed to abate, illustrating how national air-quality targets translate into binding, ground-level regulatory action.
- CAQM constituted under: Commission for Air Quality Management in NCR and Adjoining Areas Act, 2021
- N1 LGV (up to 3,500 kg) electric-only registration: Delhi from 1 January 2027; Gurugram, Faridabad, Sonipat, Ghaziabad, Gautam Buddh Nagar from 1 July 2027; rest of NCR from 1 January 2028
- N2 LGV (3,500-7,500 kg) electric-only registration: Delhi from 1 January 2028
- M.C. Mehta v. Union of India (1998): Supreme Court ordered Delhi's bus fleet CNG conversion by 31 March 2001
- GRAP stages by AQI: Stage I (201-300), Stage II (301-400), Stage III (401-450), Stage IV (above 450)
- NCAP (launched January 2019) covers 131 non-attainment cities; revised target is a 40% PM10 reduction by 2026 from 2017 levels