Flash’s Post

Welcome back to #LetsTalkETCS (Post 13) Let's look at Level 2 without Train Integrity. In the previous post explained how Level 2 of the European Train Control System (ETCS) offers continuous supervision and communication. In this level, the train communicates with the Radio Block Centre (RBC). To better understand Level 2, let's consider a scenario where the train travels on a track without any underlying signalling systems. In this case, the RBC can send movement authorities to the train, and the train can also send its position report to the trackside. However, there's no way for the trackside to determine if the train is complete, which raises the question of how to ensure that the track behind the train is entirely free with no part of the train detached. This is where Track Train Detection (TTD), used in conventional block systems (Track Circuits, Axle Counters), can be implemented. Let's now add TTD to the scenario. The active cab will send the position report to the RBC as the train moves along the track. In this case, the front of the train is known (how the system knows this will be discussed later), but the status of the rear is unknown to the system. Hence, the TTD will keep the track status as Occupied until the train has moved out and all parts have cleared the section. ... The main difference between Level 2 with Train Integrity and without Train Integrity lies in determining whether the track behind is clear.   In Level 2 without Train Integrity, we used a track train detection (TTD) system. However, this post focuses on Level 2 with Train Integrity; I will introduce the Train Integrity Monitoring System (TIMS). TIMS is an external device that monitors the completeness of the train, thereby eliminating the need for trackside occupancy detection and placing the responsibility on the train itself. Let's look at another scenario. Train "A" is moving on the track. It will send a position report to the RBC (Radio Block Centre), which will contain confirmation of the integrity of the train. This will inform the RBC that the complete Train "A" is moving along the track. The RBC can now send a movement authority to Train "B", allowing it to move to a safe distance behind Train "A". This reduced headway between the two trains will enable more trains to run in sections, increasing network capacity.

... Today, a big number of different national ATP systems exists. Also, there are still railways that do either not yet have any ATP systems or just very simple ones. Today, there are three big international ATP project to replace older systems for better interoperability and to be used in all new installation:  The European Train Control System (ETCS)  The Chinese Train Control System (CTCS)  The North American Positive Train Control System (PTC) Existing installations of older ATP systems are gradually replaced by systems covered by these projects. That is, why the following paragraphs concentrate on the principles behind these three system families. For a description of principles used in older ATP systems.

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Register now for our next webinar "Airflow Visualization Studies: the Impact of Annex 1 on Sterility Assurance" for a practical guide on how to properly execute the studies and how they have become a key aspect of a CCS. Register here: https://bit.ly/47ToqS9 #ccs #smokestudies #annex1

Register now for our next webinar "Airflow Visualization Studies: the Impact of Annex 1 on Sterility Assurance" for a practical guide on how to properly execute the studies and how they have become a key aspect of a CCS. Register here: https://bit.ly/47ToqS9 #ccs #smokestudies #annex1

Register now for our next webinar "Airflow Visualization Studies: the Impact of Annex 1 on Sterility Assurance" for a practical guide on how to properly execute the studies and how they have become a key aspect of a CCS. Register here: https://bit.ly/47ToqS9 #ccs #smokestudies #annex1

Register now for our next webinar "Airflow Visualization Studies: the Impact of Annex 1 on Sterility Assurance" for a practical guide on how to properly execute the studies and how they have become a key aspect of a CCS. Register here: https://bit.ly/47ToqS9 #ccs #smokestudies #annex1

Register now for our next webinar "Airflow Visualization Studies: the Impact of Annex 1 on Sterility Assurance" for a practical guide on how to properly execute the studies and how they have become a key aspect of a CCS. Register here: https://bit.ly/47ToqS9 #ccs #smokestudies #annex1

🚄🔧 Difference Between TCMS and CCS in Railway Systems 🔧🚄   Are you familiar with the terms TCMS and CCS in rail systems? Let's explore their differences and the important functions they perform!   🔹 TCMS (Train Control and Management System) refers to the onboard control system installed in each train. It's like the brain of the train, responsible for managing various subsystems such as traction control, braking, door control, and more. But what does it really do? ✨ Four Main Functions of TCMS ✨ 1️⃣ Capturing the Operating State 2️⃣ Train Control and Supervision 3️⃣ Automatic Control 4️⃣ Diagnostics and Maintenance   🔹 On the other hand, CCS (Communication-Based Train Control System) is a signaling and control system that manages train movements and ensures safety across the entire rail network. It's an essential component for smooth and secure rail operations. Let's dive into its functions! ✨ Key Functions of CCS ✨ 1️⃣ Train Movement Authorization 2️⃣ Speed Control 3️⃣ Train Separation and Collision Avoidance 4️⃣ Automatic Train Protection (ATP)  And More ......... _While TCMS focuses on onboard control and subsystem management, CCS oversees network-wide train movement, safety, and signaling functions. #RailSystems #TCMS #CCS #TrainControl #Signaling #RailwaySafety