ট্রেনের সিগন্যাল কিভাবে কাজ করে || Sign Board গুলোর মানে কি ? Railway Signalling Explained

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New Channel Subscribe : https://bit.ly/2MSVNRl ট্রেনের সিগন্যাল কিভাবে কাজ করে || Sign Board গুলোর মানে কি ? Railway Signalling Explained


Automatic block signaling : Automatic block signaling (ABS) is a railroad communications system that consists of a series of signals that divide a railway line into a series of sections, or "blocks". The system controls the movement of trains between the blocks using automatic signals. ABS operation is designed to allow trains operating in the same direction to follow each other in a safe manner without risk of rear-end collision. The introduction of ABS reduced railways' costs and increased their capacity. Older manual block systems required human operators. The automatic operation comes from the system's ability to detect whether blocks are occupied or otherwise obstructed, and to convey that information to approaching trains. The system operates without any outside intervention, unlike more modern traffic control systems that require external control to establish a flow of traffic.






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