When vehicles move on roads, especially near damaged shoulders, unpaved edges, construction zones, and dusty surfaces, they continuously lift settled dust back into the air.
Most people assume air pollution comes only from vehicle exhausts and factories. However, a significant amount of airborne particulate matter can originate from dust that was already lying on the road.
Every passing vehicle acts like a blower, repeatedly suspending fine particles into the breathing zone of pedestrians, cyclists, roadside vendors, and nearby residents.
This process, known as dust resuspension, is largely unnoticed because the dust is often invisible to the naked eye, yet it contributes to poor air quality every day.I observed that roads with dust accumulation, broken edges, and nearby construction activities generate visible dust clouds whenever vehicles pass. Even after cleaning, dust returns because traffic continuously lifts settled particles back into the air.