Deadman on ATO

You've lost me here, there's no siren when the communicating doors are open.

I know the 73s pretty well, and I can safely say that no siren goes off as a result of opening the inter-car doors. To prove the point, when I was on a train which was being shunted in Northfields depot, nearly all the car-end doors were open, and no such siren went off.

Given the "Danger of death if used when the train is moving" notices on the inter-carriage doors, I wouldn't be surpised if some well-meaning person had pulled the passenger alarm for that.
I've never been on a train when the alarm has been pulled (to my knowledge anyway), so I don't know whether they commonly sound in the passenger cars as well. If I were designing the system, I'd give the passenger an auditory indication that the alarm had worked, but obviously I didn't design it!

Chris

I wonder if (odd as it sounds) the guy was trying to, or did, somehow open a middle/back cab door?

That would be sensible, but what if there were violent thugs on board who hear the alarm and turn on the person sounding it?

Although an inter-car alarm would be impractical, what about putting the handle behind a seal so it must be broken to use? They could do a-la J door and put a hole in the seal for a key to be inserted by staff.

Depends! Most trains have this, there is also two units out there that has a sonalert instead of the beeps. The beeps are continuous, until the alarm is reset.

I am not surprised if someone pulled a handle down if someone used the inter car doors as it is a very unsafe way of changing carriages, particually when there is 630vdc down there.

Let me rephrase the answer! The beeps carry on until you select the 'talk back' option in the cab.

I think you will find there is.

There was a suicide at Mile End around 5 years ago where the bloke said goodbye to everyone in the car then jumped between the cars! Which I dare say wasnt pleasant for those on the train, however there was room for him to go down and then under the train.

The reason why Inter Car Barriers have been installed, was to try to minimise the risk of people falling down between the carriages and then onto under he train.

I have, twice infact.



This extract from the story shows you that it is possible, plus if you add that to the suicide at Mile End about 5 years ago, i think that falling between the cars is possible.

If you've read it you haven't understood it.

If it were possible to get into the car from the platform by going between the cars and through the interconnecting door, why did my mate and I have to split the units to get him inside?

Terminated before I post something that will cause MA to get his underware in disarray.

In the story I linked to I was the Motorman.

On the ends of the cars adjacent to the doors are grab rails. The space between the grab rail and the end of the adjacent car is only about two or three inches at most.

It is not possible for someone to pass between the ends of the cars to reach the platform or the track. Excluding the grab rails there is some six inches.

It's been a long time since I has cause to pass from one car to another through those doors and when I did I wasn't carrying a tape measure so please don't quote me on the precise figures.

I can promise you that if we had been able to drag the person concerned in through the gap we wouild have done.

If the guard hadn't seen this person and alerted me then there would have been a large dollop of "strawberry jam" on those car ends by the time we came out of the pipe at Baron's Court, unless he'd fallen off.

I'm backing PP on this. I can fit through the gap - I did so a number of times at Nf to take the inter-car barriers off. I am a slim person, and I can tell you that there is no way that your average adult could possibly fit through there (not on 73 anyway - I'm not sure about other stock). It took me about a minute to get through.