Temporary rail signs

Author
Discussion

Venisonpie

Original Poster:

3,632 posts

89 months

Wednesday 27th March
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These appeared at South Acton yesterday, what are they telling the driver?

ZymoTech

172 posts

78 months

Wednesday 27th March
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The "R" is a reminder to the driver, if he/she has stopped at the platform, that there's a temporary speed restriction up ahead.

The top number is the speed limit, in mph , for train consists of single axle vehicles and the bottom number is the speed limit for bogie axle vehicle consists.

lawtoni

258 posts

163 months

Wednesday 27th March
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yep, as above.
the first (emergency) speed restriction boards are prior to the station, with a requirement to have this reminder at the end of the platform, (so the driver doesn't forget while involved in station duties, and takes power normally and spanks the speed limit

Venisonpie

Original Poster:

3,632 posts

89 months

Wednesday 27th March
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Thanks both.

demic

425 posts

168 months

Thursday 28th March
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ZymoTech said:
The "R" is a reminder to the driver, if he/she has stopped at the platform, that there's a temporary speed restriction up ahead.

The top number is the speed limit, in mph , for train consists of single axle vehicles and the bottom number is the speed limit for bogie axle vehicle consists.
Bottom number is for passenger, ECS, light loco or postal trains, regardless of axle configuration. I could do the higher figure when driving a 142/144 DMU. Top number is for all other traffic (freight, tampers etc).

The Reminder boards have to provided when the commencement board for the Emergency/ Temporary speed restriction is over 300yds beyond the end of the platform.

Jader1973

4,282 posts

207 months

Sunday 31st March
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Sort of related question.

When the limit changes does the back end of the train have to pass the sign before the train is allowed to accelerate?

For example, if it is a 6 coach EMU going from a 30 to a 60 does coach 6 have to be clear of the sign before the train can increase speed?

If so, how does the driver know it is okay to accelerate, especially on long freight trains?

P5BNij

15,875 posts

113 months

Sunday 31st March
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Jader1973 said:
Sort of related question.

When the limit changes does the back end of the train have to pass the sign before the train is allowed to accelerate?

For example, if it is a 6 coach EMU going from a 30 to a 60 does coach 6 have to be clear of the sign before the train can increase speed?

If so, how does the driver know it is okay to accelerate, especially on long freight trains?
Yes, in normal circumstances the rear of the train has to pass the 'T' board before accelerating away, but a new system has just come in where an additional 'A' board is mounted next to the 'T'board so the driver can accelerate straight away in order not to cause any delays, there's an example of this just to the west of Arley Tunnel on the Nuneaton to Birmingham line. On the Class 66 locos I drive we have a button to press when passing the 'T' board, the train length (in feet) is already entered into the data recorder and it beeps when the countdown gets to zero, at which point you open up and power away.

legzr1

3,868 posts

146 months

Sunday 31st March
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The A boards are being trialled where restrictions are in place because of sighting issues (such as bends approaching open crossings) rather than temp/emergency restrictions.

alangla

5,189 posts

188 months

Sunday 31st March
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(Anorak on)
Fill your boots here: https://www.railsigns.uk/sect14page3.html
(Anorak off) paperbag

Jader1973

4,282 posts

207 months

Wednesday 3rd April
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P5BNij said:
Yes, in normal circumstances the rear of the train has to pass the 'T' board before accelerating away, but a new system has just come in where an additional 'A' board is mounted next to the 'T'board so the driver can accelerate straight away in order not to cause any delays, there's an example of this just to the west of Arley Tunnel on the Nuneaton to Birmingham line. On the Class 66 locos I drive we have a button to press when passing the 'T' board, the train length (in feet) is already entered into the data recorder and it beeps when the countdown gets to zero, at which point you open up and power away.
Interesting, thanks.

Does everything have the data recorder system or does the driver have to work it out some other way?

And, would anyone know you’d accelerated early and the back end was doing 35 in a 30?

P5BNij

15,875 posts

113 months

Wednesday 3rd April
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Jader1973 said:
P5BNij said:
Yes, in normal circumstances the rear of the train has to pass the 'T' board before accelerating away, but a new system has just come in where an additional 'A' board is mounted next to the 'T'board so the driver can accelerate straight away in order not to cause any delays, there's an example of this just to the west of Arley Tunnel on the Nuneaton to Birmingham line. On the Class 66 locos I drive we have a button to press when passing the 'T' board, the train length (in feet) is already entered into the data recorder and it beeps when the countdown gets to zero, at which point you open up and power away.
Interesting, thanks.

Does everything have the data recorder system or does the driver have to work it out some other way?

And, would anyone know you’d accelerated early and the back end was doing 35 in a 30?
Everything that runs on the mainline has a data recorder these days and it can be downloaded to show exactly how the loco or unit has been driven.

legzr1

3,868 posts

146 months

Wednesday 3rd April
quotequote all
P5BNij said:
Everything that runs on the mainline has a data recorder these days and it can be downloaded to show exactly how the loco or unit has been driven.
Can you remember when Qtron was first implemented and sold by managers as a system to only ever be used in major incidents?

Those same managers now sit at home assessing ‘performance’ in real-time trying to spot major crimes such as notching up too quickly or failing to use the train length switch with a consist of 3 wagons.

A different railway nowadays.