Research on Traffic Congestion Based on System Dynamics: The Case of Chongqing, China

Table 4

Comparison of model simulation predictions with real values (2017).

Variable (unit)	Predictive value	Actual value	Error (%)
Private car (10,000 cars)	324.51	320.14	1.37
Private car (10,000 cars)	18975	19015	−0.21
City GDP (100 million yuan)	18990.2	19500.27	−2.62
Permanent residents (10,000 people)	3069.24	3075.16	−0.19
Total household registration population (10,000 people)	3400.35	3389.82	0.31
NO2 stock (10,000 tons)	214031	203954.91	4.94