Rethinking the rationality and practicality of estimating vehicle emission factors with tunnel experiments

Puntos clave

• Estimation of vehicle emission factors revealed significant variations based on tunnel experiment conditions.
• The study analyzed emission data from multiple tunnels to quantify estimates accurately and reliably.
• Assessment using tunnel experiments provided insights into pollution measurement techniques and their practicality.
• The findings highlight a need for more comprehensive methods to evaluate air quality in urban environments.