The socioeconomic inequality in traffic-related disability among Chinese adults: The application of concentration index

► We use a nationally representative data on traffic-related disability (TRD) in China. ► We apply concentration index (CI) to analyze the socioeconomic inequality in TRD. ► Poor adults bear disproportionately heavier burden of TRD in China. ► Reducing income inequality and protecting safety of poor road users are important.