[Validation and subjective reports of exposure to traffic by traffic count, NO2 dispersion modeling and measuring NO2 emissions].

Objectives: The validity of self-reports of traffic density on street of residence in cities has not been evaluated extensively yet.

Methods: This study compared traffic self-reports with exposure estimates based on traffic counts and emission measurements.

Results: Self-reports correlated well with traffic count data but less well with data from measurements of background emission.