A traffic control method executed by a receiver that is mounted in a vehicle moving on an arbitrary route, and can receive a plurality of types of traffic having different priorities, wherein the receiver is configured to include an arithmetic device, a storage device connected to the arithmetic device, and a network interface connected to the arithmetic device, and manage an operation profile that stores data in which a section that is a part of the route and a communication quality in the section are associated, wherein the data stored in the operation profile includes time as information for designating the section, wherein a first traffic and a second traffic having a lower priority than the first traffic can be received, wherein the traffic control method comprises: determining, by the receiver referring the operation profile, the section having a good communication quality to a transmission section in which the second traffic can be transmitted; and executing a traffic restriction determination process in which the receiver generates control information for controlling transmission of the second traffic, wherein the traffic restriction determination process includes generating, by the receiver, first control information for controlling transmission of the second traffic when the vehicle is located in the transmission section by measuring, by the receiver, a throughput of the first traffic in a current transmission when the first traffic and the second traffic are transmitted, and generating, by the receiver, the first control information for reducing an upper limit rate of the second traffic when it is detected that the throughput of the first traffic is lowered, generating, by the receiver, second control information for controlling not to transmit the second traffic when the vehicle is located in a section other than the transmission section, and transmitting the first and second control information to a second transmitter transmitting the second traffic. wherein the receiver is configured to include an arithmetic device, a storage device connected to the arithmetic device, and a network interface connected to the arithmetic device, and manage an operation profile that stores data in which a section that is a part of the route and a communication quality in the section are associated, wherein the data stored in the operation profile includes time as information for designating the section, wherein a first traffic and a second traffic having a lower priority than the first traffic can be received, wherein the traffic control method comprises: determining, by the receiver referring the operation profile, the section having a good communication quality to a transmission section in which the second traffic can be transmitted; and executing a traffic restriction determination process in which the receiver generates control information for controlling transmission of the second traffic, wherein the traffic restriction determination process includes generating, by the receiver, first control information for controlling transmission of the second traffic when the vehicle is located in the transmission section by measuring, by the receiver, a throughput of the first traffic in a current transmission when the first traffic and the second traffic are transmitted, and generating, by the receiver, the first control information for reducing an upper limit rate of the second traffic when it is detected that the throughput of the first traffic is lowered, generating, by the receiver, second control information for controlling not to transmit the second traffic when the vehicle is located in a section other than the transmission section, and transmitting the first and second control information to a second transmitter transmitting the second traffic. determining, by the receiver referring the operation profile, the section having a good communication quality to a transmission section in which the second traffic can be transmitted; and executing a traffic restriction determination process in which the receiver generates control information for controlling transmission of the second traffic, wherein the traffic restriction determination process includes generating, by the receiver, first control information for controlling transmission of the second traffic when the vehicle is located in the transmission section by measuring, by the receiver, a throughput of the first traffic in a current transmission when the first traffic and the second traffic are transmitted, and generating, by the receiver, the first control information for reducing an upper limit rate of the second traffic when it is detected that the throughput of the first traffic is lowered, generating, by the receiver, second control information for controlling not to transmit the second traffic when the vehicle is located in a section other than the transmission section, and transmitting the first and second control information to a second transmitter transmitting the second traffic.