In order to solve the traffic problems, developed countries such as the United States, Western Europe, and Japan have invested a lot of manpower, financial, and material resources to carry out large-scale research and experimentation on road transportation intelligence. According to the report, the total annual budget of the United States government for ITS research and development is $1.2935 billion; The Europe's budget for ITS joint research and development projects alone amounted to 28 billion ECU in four years. The Japanese government spent 16.1 billion yen on ITS research and development, and 128.5 billion yen on ITS practical application and infrastructure construction. The high return brought by the high investment is very attractive in terms of the advanced electronic toll collection system of the smart parking lot.