The CAQM circular introduces a Right of Way (RoW)-based classification to determine the type and capacity of MRSMs required for different road widths. This differentiated approach accounts for the wide variation in road configurations across NCR states.
For roads with a RoW greater than 15 metres, large-size MRSMs with hopper capacity above 4 cubic metres and operating width exceeding 3 metres are prescribed. Roads with RoW between 10 and 15 metres require medium-size machines with hopper capacity ranging from 1 to 4 cubic metres.
For narrower roads with RoW below 10 metres, small-size MRSMs with hopper capacity less than 1 cubic metre have been recommended. The Commission has allowed reasonable flexibility in technical specifications depending on operational needs.
Mandatory Dust Suppression Features
To ensure effective dust mitigation, all MRSMs must be equipped with integrated water spraying systems to suppress dust during operations. Additionally, machines must include robust particulate matter filtration systems to prevent re-entrainment of dust into the air.
The Commission has also mandated that only CNG-fuelled or electric MRSMs be inducted into new fleets. This measure aligns sweeping operations with cleaner fuel standards and broader environmental objectives.
Operational Benchmarks for Agencies
The operational norms require MRSMs to function for at least eight hours per shift. Agencies must declare sweeping schedules in advance to minimise inconvenience to the public.
Large and medium-size machines should cover approximately 40 running kilometres in an eight-hour shift, while small-size machines must cover at least 20 running kilometres. The number of required machines should be calculated on the basis of alternate-day sweeping schedules.
The circular clarifies that one kilometre of carriageway without a median corresponds to two running kilometres, while one kilometre with a median equals four running kilometres, as both sides must be cleaned. However, actual deployment may vary depending on visible dust accumulation.
Scientific Disposal and Manual Support
Beyond mechanised sweeping, the circular calls for the use of handheld vacuum cleaners and litter pickers for footpaths and road edges. Agencies must ensure scientific disposal of collected dust to prevent re-entry of particles into the atmosphere.
The Commission has emphasised that improper disposal could negate the benefits of sweeping, making end-to-end dust management critical.
Strengthening NCR’s Air Quality Strategy
The CAQM reiterated that targeted mechanised sweeping is vital for reducing road dust emissions and improving air quality across Delhi-NCR. By institutionalising uniform standards for fleet planning, procurement and operations, the Commission aims to bring measurable improvements in particulate pollution levels.
The Commission has stated that compliance with these norms will be closely monitored. Road-owning and maintenance agencies across NCR states are expected to align their operational strategies with the circular.