Analysis on mediating effect of dangerous driving behavior between distraction and accident
To explore the causal relationship mechanism of distracted driving to accident casualties consequence,the traffic accident data in 2020 from the Crash Report Sampling System(CRSS)was taken as the sample.The causal mediation effect analysis method and the Monte Carlo approximation algorithm were employed for estimation,and the sensitivity analysis was conducted to validate the fundamental assumptions of causal mediation effect.The results show that the distracted driving ex-erts significant mediation effect on the accident casualties consequence.Different dangerous driving behavior exhibit varying degrees of mediation effect between distraction and accident casualties.The average causal mediation effect of the failure to yield behavior accounts for 21.2%of the total effect,demonstrating the largest mediation effect.This study confirms the medi-ation effect of dangerous driving behavior between distraction and accident casualties,and calculates the corresponding media-tion effect of different dangerous driving behavior.The research results can put forward specific safety countermeasures to alle-viate the risk of accidents.