Calculating the Contribution Rate of Intelligent Transportation System in Improving Urban Traffic Smooth Based on Advanced DID Model

Table 10

Estimation results of the model.

Variable	Coef.	Bootstrap; std. err.			[95% conf. interval]
RODM		0.201156		0.000		1.54042
CVECH		0.890793		0.065		0.1475842
GDP		0.568868		0.010		3.152118
GRP		0.050119		0.494		0.0776114
ITS		0.049013		0.538		0.0795012
GRP ITS	0.092490	0.063868	1.450000	0.182		0.2369696
_cons	0.054003	0.094830	0.570000	0.583		0.2685238

statistics in parentheses: < 0.05 and < 0.01.