What is the difference between automatic block and semi-automatic block?
1 Answers
The differences between automatic block and semi-automatic block are as follows: 1. Automatic block divides several block sections between two stations, while semi-automatic block takes the distance between two stations as one block section. 2. Automatic block sections are equipped with track circuits, while semi-automatic block only has short track circuits at both ends of the station. 3. The unlocking of automatic block sections is automatically performed by the train's track circuit, while semi-automatic block sections require the duty personnel to complete procedures before they can be opened. Information about automatic block and semi-automatic block is as follows: 1. Semi-automatic block: This type of block requires manual handling of block procedures. Trains depart based on the display of the departure signal, but after the train departs, the departure signal can automatically close, hence it is called semi-automatic block. 2. Automatic block: Based on the train operation and block section conditions, the signals can automatically change their display. Trains run according to the signal display, and this block method is completely automatic, hence it is called automatic block. Automatic block is a device that automatically completes block tasks for running trains.
