18-05-2011, 09:29 PM
One more thing I would like to ask, how do a fouling point is marked on the layout (British Practice) ? because in the book, i cannot see any marking on the diagram that point out the fouling point. (or is there always flank protection for the crossing ?)
As the railway line i have exposed to in the past, there is always letter "F" marked on the layout to show the reader that the section is protected by the flank protection (due to the track next to each other is close enough that a train side collision might happen, as this often the case in depot.). Whereas, if it not marked by the letter ''F'', there is no flank protection.
william
As far as im aware fouling points are not marked on plans.
clearance points are sometimes marked.
the extremities of track sections over junctions is set to a minimum distance (>4880mm from fouling point) known as the clearance point.
thus routes will not set if any train axle is sitting closer than 4880mm from the fouling point because it will be encroaching on section over the junction.
As the railway line i have exposed to in the past, there is always letter "F" marked on the layout to show the reader that the section is protected by the flank protection (due to the track next to each other is close enough that a train side collision might happen, as this often the case in depot.). Whereas, if it not marked by the letter ''F'', there is no flank protection.
william
As far as im aware fouling points are not marked on plans.
clearance points are sometimes marked.
the extremities of track sections over junctions is set to a minimum distance (>4880mm from fouling point) known as the clearance point.
thus routes will not set if any train axle is sitting closer than 4880mm from the fouling point because it will be encroaching on section over the junction.