Train control system

A train control system comprising:

• a first on-board device installed on a first train;
• a second on-board device installed on a second train, the second train traveling in a travel direction identical to a travel direction of the first train and traveling ahead of the first train;
• and
• a ground control device to provide control of the first train and of the second train based on an on-track location of the first train calculated in the first on-board device and on an on-track location of the second train calculated in the second on-board device, wherein
• the first on-board device generates an emergency brake command to control an emergency brake unit installed on the first train when it is determined that an actual deceleration value of the first train is insufficient in comparison with a predetermined reference deceleration value, and the first on-board device predicts a first stop location of the first train based on the actual deceleration value, and sends a first signal indicating insufficient deceleration and a first stop location signal representing the first stop location predicted to the ground control device when it is determined that the actual deceleration value of the first train is insufficient in comparison with a predetermined emergency brake reference deceleration value,
• the ground control device receives the first signal and the first stop location signal from the first on-board device, and sends the first signal and the first stop location signal to the second on-board device, and
• the second on-board device receives the first signal and the first stop location signal from the ground control device, invalidates a first run curve that has been preset, over a range from a second train location to a stop limit location of the second train, and generates a second run curve to control the second train, the second train location representing the on-track location of the second train.