The Graded Response Action Plan (2017-2025)
India's central government created the Graded Response Action Plan to stage air quality restrictions in Delhi by severity, imposing curbs only after pollution reached set thresholds.
The system triggered sudden construction halts and traffic restrictions with little advance notice to residents and businesses.
The unpredictability became a central complaint, prompting the shift to a calendar-based approach.
The new winter action plan is designed to replace that unpredictability, setting restrictions on a fixed schedule while keeping the graded plan as a backstop for emergencies.
