Do Expressway Interchanges Increase Crash Injury Severities? Insights Using Temporal Instability and Unobserved Heterogeneity

Table 8

AIC model is used to predict the probability difference of NAIC data.

Year	IAC model to predict NAIC data
	No injury	Minor injury	Severe injury
2017	0.0095	0.0049	−0.0144
2018	0.0025	0.0079	−0.0104
2019	−0.0054	0.0148	−0.0094