Signal "diamond" signs

[MOONY]

Hi,

I have recently noticed that certain signals in the Hither Green area [3 Bridges ROC] have the "diamond" sign that originally was [and still is] to be seen on Semaphore signals to indicate that the berth was track circuited in an Absolute box area. Can anyone explain why these are present on certain signals in a TCB MAS area please?

Many thanks,

Moony.

 

[Teddyward]

Just means there is no telephone associated to that signal but the signaller is aware of your presence.

 

[dctraindriver]

Deleted

 

[D6130]

If the diamond sign has a black letter x in the centre, it signifies that there is no safe clearance and that drivers must not under any circumstances leave the cab to use the phone. Instead they must contact the signaller by other means (NRN, CSR, GMSR, etc). This rule was introduced after a Barrow driver was killed by another train at Slade Lane Junction, Manchester, back in the 1990s.

 

[Efini92]

If the diamond sign has a black letter x in the centre, it signifies that there is no safe clearance and that drivers must not under any circumstances leave the cab to use the phone. Instead they must contact the signaller by other means (NRN, CSR, GMSR, etc). This rule was introduced after a Barrow driver was killed by another train at Slade Lane Junction, Manchester, back in the 1990s.

They also took the extendable cords off the spt’s after that.

 

[alxndr]

They also took the extendable cords off the spt’s after that.

SPTs should be risk assessed and the handset cord length determined appropriately. There are some cases where you need to have a stretchy cord to be able to reasonably use them, albeit more so for direct dial phones that live in a separate cupboard. Trying to make a call when the cord is so short your head's inside a small cupboard isn't particularly practical.

 

[Efini92]

SPTs should be risk assessed and the handset cord length determined appropriately. There are some cases where you need to have a stretchy cord to be able to reasonably use them, albeit more so for direct dial phones that live in a separate cupboard. Trying to make a call when the cord is so short your head's inside a small cupboard isn't particularly practical.

Especially when there’s a big spider in there!

 

[Deepgreen]

If the diamond sign has a black letter x in the centre, it signifies that there is no safe clearance and that drivers must not under any circumstances leave the cab to use the phone. Instead they must contact the signaller by other means (NRN, CSR, GMSR, etc). This rule was introduced after a Barrow driver was killed by another train at Slade Lane Junction, Manchester, back in the 1990s.

If there is no phone to use anyway (denoted by the diamond), why would that be necessary?

 

[Eccles1983]

If there is no phone to use anyway (denoted by the diamond), why would that be necessary?

Because you can still use it in an absolute emergency or if you have been told that traffic is not moving on the other line.

Basically don't use the phone in normal circumstances such as GSMR failure etc.

 

[edwin_m]

If there is no phone to use anyway (denoted by the diamond), why would that be necessary?

In a lot of cases the phone was left in place, just not to be used.

 

[the sniper]

If there is no phone to use anyway (denoted by the diamond), why would that be necessary?

The white diamond aspect of it didn't develop entirely logically. I believe the sign you're talking about was originally intended and implemented as a yellow diamond with a black cross, but turned out that they could be mistaken for a double yellow indication when attached to a post of a signal displaying only a single yellow aspect. So they became white diamond's with a black cross.

 

[MOONY]

Many thanks folks

oony