TRUST Points

[ComUtoR]

Morning, Evening, or Afternoon.

Is there track-side equipment for a TRUST point or is it based on the track circuit berth ?

How does TRUST know when a train has arrived etc ? Is there some interpretation of the data, as it it trips trust but then a minute or so is added for a unit actually arriving at a station. It takes almost 2 minutes to hit the buffers some times but a service will show arrived before its even hit the platform.

Cheers in advance.

 

[Llanigraham]

Depends where you are. Many "reporting points" are still manual ones, with the signaller entering the times as the train passes the Box.

 

[Poggs]

Is there track-side equipment for a TRUST point or is it based on the track circuit berth?

There's nothing TRUST-specific trackside. TRUST uses TD berth data where the train describer reports to a system called SMART.

How does TRUST know when a train has arrived etc? Is there some interpretation of the data, as it it trips trust but then a minute or so is added for a unit actually arriving at a station. It takes almost 2 minutes to hit the buffers some times but a service will show arrived before its even hit the platform.

TRUST works off berth operations, as well as GPS movement reports and manual inputs.

For an auto-reporting point, the TRUST arrival or departure will be based on the time the train's description stepped between two berths (or in some cases, was interposed in, or cancelled from, a berth), plus or minus an berth offset. This is what causes an arrival at a terminus to appear on TRUST before the train's come to a stop - the arrival time is taken as, for example, +60 seconds from the time it passes the last signal before the platform.

There is a spreadsheet of all the berth moves (interpose, step or cancel), and the events they relate to, with berth offsets and STANOXes. I can upload a copy here if you're interested.

For a manual reporting point, it relies on a signaller, IM or RU staff entering the arrival or departure time manually in to TRUST. This can't be done in advance - you can't report a train as having arrived at 1205 if the time's 1204 - but you can report a train as having arrived at 1205 if it's 1206 or later.

GPS is different and I won't go in to the detail here.

 

[ComUtoR]

You're stars, many many thanks.