Risk-prevention-and-control-oriented toll station ETC barrier gate delayed opening control method

The invention relates to a toll station traffic flow control method, in particular to a risk-prevention-and-control-oriented toll station ETC barrier gate delayed opening control method. The objectiveof the invention is to solve problems that existing expressway main line risk prevention and control measures are extensive, and the release amount of a toll station cannot be accurately judged according to the remaining traffic capacity of a road section under the influence of a specific risk source. The method comprises the following steps: 1, acquiring risk source information of an expresswaymain road section and traffic flow information of the upstream of a risk road section and a ramp road section; 2, calculating the residual bearing capacity of the risk road section; 3, judging whetherthe toll station adopts opening or closing control; if the toll station is opened, judging whether a toll station ETC barrier gate delay opening control scheme is implemented or not; 4, if the ETC barrier gate delay opening sc