Transport air quality technology
Air quality technology for transport pollution hotspots.
We’re a transport air quality solutions provider — engineering filtration technology that targets pollution hotspots at the source: road traffic hotspots for Roadvent, underground platform hall areas for Railvent, and road tunnel ventilation outlets for Tunnelvent. All three are built on the same principle: capture pollutants as close as possible to their source, stopping dispersion, dilution and human inhalation.
Smoke demonstration.
Choose a system
Live & independently verified
Roadvent
For busy roads and other traffic pollution hotspots, capturing vehicle emissions at the roadside. Verified at UTAC Millbrook Proving Ground to reduce exposure by 91%, and patented in 21 countries.
91%
Exposure
reduction
Measured at the UTAC Millbrook Proving Ground demonstration facility. See the test reports.
Explore Roadvent →Ready for deployment
Railvent
For underground rail networks. Used in platform hall areas, where particulate pollution from rail operations concentrates most.
Explore Railvent →Ready for deployment
Tunnelvent
For road tunnels. Used at ventilation outlets, cleaning the air before it leaves the tunnel and reaches the neighbourhood.
Explore Tunnelvent →The global problem
99%
of the world’s population lives where air pollution exceeds WHO guideline limits.
HEALTH EFFECTS INSTITUTE, 2024
8.1M
lives lost each year to air pollution.
HEALTH EFFECTS INSTITUTE, STATE OF GLOBAL AIR 2024
700,000
deaths in children under five.
HEALTH EFFECTS INSTITUTE, STATE OF GLOBAL AIR 2024
~90%
of NCDs such as heart disease, stroke and lung cancer is driven by the air we breathe.
CMO ANNUAL REPORT 2022
Air pollution is a top-five global risk factor for deaths in children under five.
PM2.5 exposure is linked to respiratory disease, Alzheimer’s and cancer.
SOURCE: DEFRA EVIDENCE SUBMISSION
Why target hotspots
Hotspots are where pollutant concentrations are highest, human exposure is greatest, and compliance can be achieved fastest and most cost-effectively. Road, rail and tunnel hotspots share the same pattern: emissions build up, and the space can’t dilute them.
Road hotspots
High traffic volume
→
Build-up of vehicle emissions
Enclosed architecture and layout
→
Insufficient airflow and dilution
Roadvent · captures emissions in the road surface
Underground rail hotspots
Physical grinding of metallic components
→
Build-up and resuspension of emissions
Indoor environment
→
Insufficient airflow and dilution
Railvent · captures in underground rail platform halls
Road tunnel hotspots
Traffic in an enclosed bore
→
Emissions build up
Fans extract tunnel air
→
Pollution released at the outlet
Tunnelvent · captures at the tunnel ventilation outlet
Active travel and public transport are the long-term answer to transport emissions, but behaviour change alone doesn’t address the exposure people face at hotspots today. Cyclists and pedestrians breathe more air, closer to the source; bus stop and station users face concentrated exposure.
Roadvent patent protection — 21 territories
EUROPE — EUROPEAN PATENT, VALIDATED IN 18 STATES
Austria Belgium Switzerland & Liechtenstein Germany Denmark Spain Finland France United Kingdom Ireland Italy Luxembourg Monaco Netherlands Norway Portugal Sweden Greece
GLOBAL
United States China Hong Kong