A Roadway Safety Sustainable Approach: Modeling for Real-Time Traffic Crash with Limited Data and Its Reliability Verification

Table 11

The results of the updated low precision data set model.

Variable	Before		After
	Mean	Confidence interval	Mean	Confidence interval
Constant	−1.477	(−1.650, −1.283)	−1.470	(−1.663, −1.290)
abs_dif_o	0.183	(0.012, 0.354)	0.189	(0.023, 0.352)
up_s	−0.300	(−0.503, −0.098)	−0.307	(−0.512, −0.110)
up_dif_o	0.252	(0.053, 0.451)	0.253	(0.052, 0.446)