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bedfordone
Active Member

USA
43 Posts

Posted - 06/12/2019 :  07:28:19 AM  Show Profile  Reply with Quote
TransportQueen
New Member

3 Posts

Posted - 05/30/2019 : 07:05:15 AM Show Profile Visit TransportQueen's Homepage Reply with Quote
I found an article from Ireland about a safety feature that locks emergency doors when the bus hits a certain speed, then unlocks them when the bus goes below that speed. They implemented this in response to several students who fell or jumped from moving buses, which is a widespread problem in the States too. Have you guys heard of American buses (or any buses) that have a feature like this?

I know FMVSS 217 requires an interlock system, but since it only requires that the bus not START while the doors are locked, I think a feature like this would still comply. I'm just curious if anybody has more information on doors like this, I'd be very interested to see what's out there.

Here's the article for reference:
https://www.independent.ie/life/family/learning/new-doors-wont-open-at-speed-26281983.html

bwest
Administrator

United States
3682 Posts

Posted - 06/12/2019 :  08:15:23 AM  Show Profile  Reply with Quote
I would suspect that this would not comply with current law. That being said, I believe it would possibly be a good addition. On the flip side (from my mechanic half) I don't believe I would want the added troubled and wiring that this will bring.
Just my two cents.

Bryan
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krmvcs
Advanced Member

342 Posts

Posted - 06/12/2019 :  09:17:34 AM  Show Profile  Reply with Quote
Im sure many would argue over how a system like this would failsafe in the unlocked position, and the potential of an emergency exit being unusable if/when it is needed. I think it would be a bad idea for any exit to be locked at any time other than when the bus is stationary and empty.

-Ken-
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Thomasbus24
Administrator

USA
4387 Posts

Posted - 06/13/2019 :  05:23:11 AM  Show Profile  Reply with Quote
I used to like locking exits (FMVSS compliant vandal locks). Then I had a bus roll over.

During the post-crash, the patrolman and I were working together to do the inspection before uprighting the bus and we discovered that during the crash sequence, the body had twisted and the barrel bolt lock had moved and was about 1/16" from locking the door shut.

I'd be concerned that this could happen to an automatic lock, getting it jammed on an angle where it couldn't release or was still otherwise holding the doors shut.

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bwest
Administrator

United States
3682 Posts

Posted - 06/13/2019 :  06:02:05 AM  Show Profile  Reply with Quote
quote:
Originally posted by Thomasbus24

I used to like locking exits (FMVSS compliant vandal locks). Then I had a bus roll over.

During the post-crash, the patrolman and I were working together to do the inspection before uprighting the bus and we discovered that during the crash sequence, the body had twisted and the barrel bolt lock had moved and was about 1/16" from locking the door shut.

I'd be concerned that this could happen to an automatic lock, getting it jammed on an angle where it couldn't release or was still otherwise holding the doors shut.





Good Point!

Bryan
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willism
Senior Member

United States
192 Posts

Posted - 06/13/2019 :  08:08:50 AM  Show Profile  Visit willism's Homepage  Reply with Quote
We remove that ring before ever putting the bus in service.
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