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Living next to a highway or major road: air pollution and noise
Near-road exposure research, why traffic volume matters more than distance, and what to check at rush hour.
HealthEveryday nuisanceGuidance reviewed 2026-09-13
A source is not an exposure measurement. Health effects depend on the chemical or physical agent, whether it reaches a person, its concentration, exposure route, duration and individual susceptibility.
Why living near major roads & traffic may matter
Traffic can contribute to air pollution and noise. Near-road exposure has been associated with respiratory and cardiovascular effects. Road distance does not establish the concentration inside a home.
How it could actually reach a home
Traffic volume, vehicle mix, congestion, wind and building ventilation influence exposure. Road geometry is community mapped; traffic counts are not supplied by this layer.
What a map cannot tell you
- Traffic volume and heavy-truck proportion
- Pollutant and indoor-noise measurements
- How barriers, weather and ventilation affect the property
What to check next, and who can answer
- Transportation department: Request recent traffic counts, truck routes and planned road changes.
- Seller / inspector: Visit during rush hour and at night; assess window and ventilation conditions.