TPWS 2

[@williamhuang8309]

"SPAD Alert contact the signaller" It's like telling your parents that you didn't do your homework.

[@manomaylr]

Or worse, the teacher.

[@TrainsAviation]

@@manomaylr or even worse, The Head Teacher.

[@bleentrean5849]

"So, what got you fired from the railway?" "Oh, I forgot to acknowledge the AWS, then went overspeed, then SPADed at the same time."

[@alexwiddowson3756]

John McDermott - New Street, Paul Turner - Crewe, Mark Dixon - New Street and Colin Kempster - Bletchley. Paul Turner is now retired, the other three remain on their jobs as instructor drivers.

[@Curvylovedog]

This is Colin - I've now retired!

[@alexwiddowson3756]

@@Curvylovedog Thanks.

[@waynegriffiths5143]

Does pressing the Spad automatically print a P45?

[@TheArkamedBat]

What is a P45?

[@waynegriffiths5143]

@@TheArkamedBat The form you get when you're fired from a job in the UK.

[@TheArkamedBat]

​@@waynegriffiths5143 Thanks.

[@turn82]

Not necessarily.. a spad is not the end of the world

[@nounoufriend1442]

Spad could have been because signal went back on you , signal fault , signalling error or someone else passed a signal

[@fetchstixRHD]

Just remembered a question now! Towards the end there’s the demonstration of “increasing severity” (e.g. failing to cancel an AWS warning then overspeeding/SPADding), what happens in the other direction (e.g. a SPAD then an uncancelled AWS or overspeed)? Now I’m curious 🤓

[@pwhnckexstflajizdryvombqug9042]

Once the spad alert has happened the others are just ignored.

[@TheArkamedBat]

It was a 350/3 in London Midland (Madland).

[@Ztbmrc1]

Interesting. Why the 60 sec wait? To cool down the brakes? Is TWPS already in use now ( july 2016)?

[@electricitymachine6401]

The original TPWS was in use since around the 90s with British Rail and Railtrack. This is a just more advanced system with the same track interface.

[@cjmillsnun]

60 second wait means that you can't just cancel and continue. It ensures that the train comes to a complete halt.

[@AlastorTheRadio]

What train model is that ? Is it one of the class 700 family?

[@TheArkamedBat]

Class 350.

[@Aventra730]

@@TheArkamedBat Class 350/3

[@cheoljosa]

what's the name of the song?

[@Paul-is4dw]

Good video.

[@Drone3774]

This is a class 350 right

[@Curvylovedog]

Yes. 350/3

[@J.Chapman-Drums]

An AWS fail to cancel, please could someone help explain… Does this mean the driver has failed to cancel the aws or that the aws button fails to work?

[@barblx_t7892]

It means both of them, but it's unlikely the AWS button will fail unless maintenance do a shocking job on the train.

[@BigKelvPark]

The driver always claims the latter. I've had to test the system too many times and the OTMR usually shows the former.

[@J.Chapman-Drums]

@@BigKelvPark interesting!

[@driverproffitt896]

@@BigKelvPark You're right most of the time but an OTDR only shows what the channels have recorded so chances are, if the button is sticky the channel will show the button as not being pressed even if it actually was. Well this is my excuse anyhow......

[@nounoufriend1442]

@@driverproffitt896 On older AWS systems the AWS is cancelled on release of button , many drivers held button down on approach to cautionary signal then release when horn sounds

[@turn82]

Desiro 450

[@colinkempster5520]

350