Abstract
WHAT IS ALREADY KNOWN ON THIS TOPIC? With rapid urbanization, traffic-related air pollution has become a global concern. However, its association with cardiovascular health has not been fully elucidated. WHAT IS ADDED BY THIS REPORT? This study provided novel evidence of the joint cardiovascular effect of multiple pollutants in subway cabins, further identified two pollutants that played dominant roles, and validated the effectiveness of targeted interventions. WHAT ARE THE IMPLICATIONS FOR PUBLIC HEALTH PRACTICE? The findings were helpful to guide the formulation and development of prevention and control strategies for key traffic-related pollutants that endanger the cardiovascular health of commuters.