Travel control system for vehicle

A travel control system for a vehicle, the travel control system comprising:

• a plurality of processors mounted on the vehicle;
• a determination processor mounted on the vehicle and configured to be supplied with control information from the processors;
• an in-vehicle communication network to which the processors and the determination processor are coupled;
• and
• a control device configured to establish wireless communication with the vehicle through a network environment, and comprising a backup processor configured to hold the control information regarding the vehicle,
• the determination processor being configured to
• take a count of unconformities between a sender identifier and a recipient identifier of the control information transmitted and received by the processors through the in-vehicle communication network, and
• when the count of unconformities becomes larger than a predetermined threshold value, determine that an abnormality is present, and transmit an abnormality signal to the control device through the network environment, and
• the control device being configured to, upon receiving the abnormality signal, transmit the control information held by the backup processor, to the vehicle through the network environment, and make a remote control of the vehicle.