Driving Trains in foggy weather

[800301]

So is idea to not dazzle oncomers at night presumably?

I'm a sad Centric I've been doing totally the opposite thing to the right .

Doesn’t matter what setting they are on, if you’re in a 387 or a 165 coming the other way you’re getting dazzled

 

[40129]

The Chester station area is also without AWS today.

Also New Street IIRC

 

[cool110]

Not as likely to see much fog there, but the entire Merseyrail underground sections have no AWS being LU style 2 aspect with tripcocks.

 

[hexagon789]

Also New Street IIRC

Many major stations have no AWS within the immediate station area, traditionally due to the complicated track layouts and generally low speeds.

 

[InkyScrolls]

Many major stations have no AWS within the immediate station area, traditionally due to the complicated track layouts and generally low speeds.

Sheffield is another example.

 

[Javelin_55]

It doesn't. TPWS is 'invisible' until an intervention occurs either due to overspeed or passing a Red.

It also doesn’t give you any indications unless you’ve already tripped it, or where the system is defective/isolated.

It's for these reasons I've always found it very strange that it's called Train Protection & Warning System. Does the 'Warning' part simply refer to the visual/audible alert once it's activated?

 

[Railsigns]

It's for these reasons I've always found it very strange that it's called Train Protection & Warning System. Does the 'Warning' part simply refer to the visual/audible alert once it's activated?

I think the origin intention when TPWS was being developed was that AWS would be subsumed into it from an operational perspective, and the AWS name would then be discontinued.

 

[cool110]

It's partly down to TPWS and AWS being connected to each other, (i.e. the TPWS Break Demand light is lit by intervention from both TPWS itself and AWS.)

 

[12LDA28C]

It's partly down to TPWS and AWS being connected to each other, (i.e. the TPWS Break Demand light is lit by intervention from both TPWS itself and AWS.)

Is that when the TPWS insists that a driver takes his PNB?

 

[AverageJoe]

Is that when the TPWS insists that a driver takes his PNB?

The sound coming from my stomach is the only audible break demand I need

 

[43066]

It's for these reasons I've always found it very strange that it's called Train Protection & Warning System. Does the 'Warning' part simply refer to the visual/audible alert once it's activated?

I think as @Railsigns suggests that name reflects how the two systems are alloyed together, but we still very much treat them and refer to them as two different systems. A brake demand triggered by a failure to cancel an AWS warning is a different matter to a TPWS brake demand.

 

[gshock]

AWS also gives a visual clue (the 'sunflower') of whether the previous signal was green or a cautionary aspect, in most circumstances.

True enough... but we've all been there when it's sunflowered for a speed restriction AFTER a green ping / bell... then thought: "oh bugger... WAS it green?"

== Doublepost prevention - post automatically merged: 2 Jan 2025 ==

The Chester station area is also without AWS today.

Sheffield station is permanently an AWS Gap (has no AWS) station.

 

[12LDA28C]

True enough... but we've all been there when it's sunflowered for a speed restriction AFTER a green ping / bell... then thought: "oh bugger... WAS it green?"

== Doublepost prevention - post automatically merged: 2 Jan 2025 ==

Indeed, hence my 'in most circumstances' caveat.