Two Sets of Rules to Track
This year, drivers need to be aware of two main sets of regulations. First is the Graded Response Action Plan (GRAP), a set of emergency measures that activate based on air quality. As of October 21, 2026, Stage I of GRAP is in effect across the NCR due
to 'poor' air quality. Second is a broader, date-based ban under Delhi's Winter Action Plan, which imposes stricter entry rules starting November 1, regardless of the GRAP stage. These two systems work in parallel to curb pollution from various sources, with vehicular emissions being a primary target.
The Big Change: A Ban on Non-BS-VI Vehicles
The most significant rule affecting out-of-state drivers is the blanket ban on vehicles not compliant with BS-VI emission norms. From November 1, 2026, to January 31, 2027, vehicles registered outside Delhi that are BS-IV, BS-III, or older will be barred from entering the capital. This rule applies to all types of private cars and commercial vehicles. The only exceptions are for vehicles running on CNG or electricity, and those providing essential services. This is a major change from previous years, where restrictions were often tied to specific GRAP stages. Now, the ban is fixed for a three-month period.
What if GRAP Stage III is Implemented?
While the November 1 ban is fixed, GRAP adds another layer of complexity. If the air quality deteriorates to the 'Severe' category (AQI 401-450), the Commission for Air Quality Management (CAQM) will enforce Stage III. This would immediately ban all BS-III petrol and BS-IV diesel four-wheelers within Delhi and its adjoining NCR districts, including those registered in Delhi. Therefore, even if your BS-IV diesel car is Delhi-registered, you will not be able to drive it during a Stage III alert. These rules are cumulative, meaning all Stage I and II restrictions remain active when Stage III is invoked.
No PUC, No Fuel: A Rule with Teeth
A crucial measure being enforced across the entire NCR is the 'No PUC, No Fuel' policy. Since October 1, 2026, petrol pumps can legally refuse to sell you petrol, diesel, or CNG if your vehicle does not have a valid Pollution Under Control (PUC) certificate. Enforcement is being upgraded with cameras at over 1,000 fuel stations to automatically check a vehicle's PUC status via its number plate. Driving without a valid PUC certificate can also lead to a hefty fine of ₹10,000.
Impact on Commercial Vehicles and Buses
The rules are particularly strict for commercial transport. From November 1, only BS-VI, CNG, and electric commercial vehicles (light, medium, and heavy) will be allowed to enter Delhi. This applies to trucks and tourist buses coming from neighbouring states. Under GRAP Stage I, any interstate buses entering Delhi must already be electric, CNG, or BS-VI diesel compliant. Previously, some exemptions existed for commercial vehicles carrying essential goods, but these have been removed for older, more polluting trucks under the revised GRAP framework.
How to Plan Your Travel
For daily commuters, navigating these rules requires proactive planning. First, verify your vehicle's emission standard (BS-IV, BS-VI, etc.) from its registration certificate. If it's below BS-VI and registered outside Delhi, you will need an alternative mode of transport to enter the city from November 1. Ensure your PUC certificate is up-to-date to avoid being denied fuel or fined. For those with compliant vehicles, it is still wise to monitor the daily AQI and GRAP alerts, as a sudden shift to Stage III could ground your BS-IV diesel car. Leveraging public transport like the Delhi Metro, carpooling, or using electric and CNG ride-sharing services are the most reliable options during this period.
