trainenthus
Member
Hi all
I'm trying to grasp what the differences is between TPWS, ATP and ETCS. I think I understand the benefits of ETCS from the perspective of efficiency and capacity.
But what is the difference between these systems from a safety perspective. I read that TPWS provides 70% of the protection of ATP for SPADS. What accounts for this reduction in safety? What can ATP do that TPWS cannot?
I read that TPWS doesn't stop a train before a red light but just after it but before and critical junctions etc. If that's true, why does it work that way? Is it that which accounts for the fact that it's not quite as safe at ATP?
How do they both compare to ETCS from a safety perspective?
Does each system have any other safety benefits other than preventing running red lights?
I understand that all the systems are effective, but just trying to understand the differences.
I have tried searching online but there doesn't seem to be a simple explanation.
Thanks!
I'm trying to grasp what the differences is between TPWS, ATP and ETCS. I think I understand the benefits of ETCS from the perspective of efficiency and capacity.
But what is the difference between these systems from a safety perspective. I read that TPWS provides 70% of the protection of ATP for SPADS. What accounts for this reduction in safety? What can ATP do that TPWS cannot?
I read that TPWS doesn't stop a train before a red light but just after it but before and critical junctions etc. If that's true, why does it work that way? Is it that which accounts for the fact that it's not quite as safe at ATP?
How do they both compare to ETCS from a safety perspective?
Does each system have any other safety benefits other than preventing running red lights?
I understand that all the systems are effective, but just trying to understand the differences.
I have tried searching online but there doesn't seem to be a simple explanation.
Thanks!
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