New Delhi, April 28 -- In a move to reduce manual sweeping and improve dust control, the Municipal Corporation of Delhi (MCD) is set to roll out mechanised street cleaning in high-footfall areas, with plans to deploy 1,000 vacuum-based litter picker machines across markets, footpaths and public spaces. The civic body has invited bids for the procurement and operation of these battery-operated units, which will be run by private contractors under an outsourcing model. A senior MCD official said the move comes amid persistent challenges in tackling visible litter. Manual sweeping remains the primary method of cleaning most markets and narrow lanes in Delhi, a process that often stirs up dust and contributes to poor ambient air quality. Delhi ...