Sensors on DPD vans and fixed locations will measure PM2.5 levels every 12 seconds / The UKs most sustainable delivery company DPD has announced the roll-out of a major new air quality monitoring programme across 6 of the biggest cities in the UK. Project BREATHE is live in London already with 100 mobile air quality sensors on the roof of DPD vans and 20 fixed units on DPD PickUp shops close to schools and play areas. By the end of May, Birmingham, Leeds, Manchester, Glasgow and Cardiff will join the ground-breaking initiative, creating a network of over 400 sensors in total, delivering 1.5m pollution readings a day.