Fresh air key to safeguarding waste collection vehicle crews from COVID-19

Keeping the cab of waste collection vehicles well ventilated and with a constant supply of fresh air is key to protecting drivers from COVID-19 transmission, finds a report from UCL researchers. The report, commissioned by Veolia, built on evidence of the risk of airborne transmission through 'aerosols' suspended in air - especially in closed environments - as well as through larger droplets produced through coughing and sneezing. Aerosols are droplets that are smaller than 50 micron, and are too small to settle on surfaces. These aerosols can remain floating in the air for hours where they can be breathed in, and at high concentrations can spread infectious diseases such as COVID-19. Replacing stale contaminated air with fresh air will lower this risk from aerosols substantially, and may help with larger droplets as well. The findings and recommendations have led to modifications in Veolia vehicles' ventilation systems and operational settings. Drivers are additionally recommended to keep cab windows open by at least 10cm during use.