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| Better notification of blocked manually operated LCs 23/01/2015 at 06:42 #68300 | |
clive
2738 posts |
" said:I think we've not yet seen an MCB-OD in Simsig form...?I'm note sure that it would look any different to a MCB or CCTV with no clear button. Log in to reply |
| Better notification of blocked manually operated LCs 23/01/2015 at 06:45 #68301 | |
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clive
2738 posts |
" said:" said:All level crossings are supposed to be reviewed regularly; read any of the recent RAIB reports into accidents at level crossings. You could try writing to the local Network Rail manager with "SAFETY-CRITICAL ISSUE" at the top of the letter, or check their web site for how to report issues.Is there any way in which this gets reviewed later if road usage patterns change following installation? There is at least one AHB that springs to mind which regularly has queuing traffic backed up over it nowadays. Are you sure it's an AHB and not an ABCL or AOCL+B? (And does anyone know what the difference between those latter two is?) Log in to reply |
| Better notification of blocked manually operated LCs 23/01/2015 at 09:30 #68304 | |
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Forest Pines
525 posts |
" said:" said:I don't live in the area any more, to be honest. The crossing in question is Great Coates, and in the period I used the crossing regularly it definitely wasn't an ABCL or AOCL+B. It did appear to have a stop/non-stop control on the down line, from watching its behaviour." said:All level crossings are supposed to be reviewed regularly; read any of the recent RAIB reports into accidents at level crossings. You could try writing to the local Network Rail manager with "SAFETY-CRITICAL ISSUE" at the top of the letter, or check their web site for how to report issues.Is there any way in which this gets reviewed later if road usage patterns change following installation? There is at least one AHB that springs to mind which regularly has queuing traffic backed up over it nowadays. Is the difference between ABCL and AOCL+B that the former proves the barriers lowered before displaying the white indicator; the latter only proves the road signals operational? Log in to reply |
| Better notification of blocked manually operated LCs 23/01/2015 at 09:46 #68305 | |
postal
5190 posts |
" said:" said:But does open the door to two different sorts of failure scenarios.I think we've not yet seen an MCB-OD in Simsig form...?I'm note sure that it would look any different to a MCB or CCTV with no clear button. 1) Vehicle stuck on the crossing so the protecting signals cannot clear until the vehicle is removed. Short-term obstruction, but how does the real life signaller know of the problem and how could the information be conveyed in SimSig? 2) Failure of OD equipment which would require S&T intervention and would be a longer term failure (so presumably similar to TCF or points failure). Apologies if I've missed this earlier in the conversation, but in real life if there is a failure of the OD equipment and given the lack of CCTV is the crossing then subject to a total blockage until the OD equipment is working again or can drivers be instructed to pass under caution? “In life, there is always someone out there, who won’t like you, for whatever reason, don’t let the insecurities in their lives affect yours.” – Rashida Rowe Log in to reply |
| Better notification of blocked manually operated LCs 23/01/2015 at 10:44 #68307 | |
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Hooverman
306 posts |
[quote="postal" post=68305]Apologies if I've missed this earlier in the conversation, but in real life if there is a failure of the OD equipment and given the lack of CCTV is the crossing then subject to a total blockage until the OD equipment is working again or can drivers be instructed to pass under All found here under the section how to deal with "A Pain In The Arse Failure" lol section 7. www.rgsonline.co.uk/Rule_Book/Rule%20Boo...00-TS9%20Iss%203.pdf The failure that we often get with our OD barriers, which is not a failure as such but still needs signaller interaction. Is when the barriers all automatically lower and end up staying down for a long two or three for one. We get an audible alarm that draws our attention to them, cancel the alarm, then wait for the last train to clear them, cancel all routes from all protecting signals (3 in our case), move the switch from auto to lower to correspond with the position of the barriers, then move into the raised position and await the up light. Then place back into auto working and reset any signalled routes and place them back into auto working as well. 
Post has attachments. Log in to view them. Log in to reply The following users said thank you: postal, maxand, flabberdacks |
| Better notification of blocked manually operated LCs 23/01/2015 at 10:51 #68308 | |
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Ron_J
329 posts |
" said:Are you sure it's an AHB and not an ABCL or AOCL+B? (And does anyone know what the difference between those latter two is?) AOCL+B is designed to look identical to an ABCL to motorists and train drivers. The differences are in the way the circuitry works. The barrier circuits were designed to be non-invasive when being installed and were superimposed on the existing AOCL wiring so there are differences, for example, in the way the barriers are proved (they aren't down proved in the +B installation so the DWL will still illuminate with the barriers fully raised under certain fault conditions). The agreememt with ORR - in Scotland anyway, presumably also UK wide - is that AOCL+B is only permitted as a stop gap until the next major asset intervention. When the crossing equipment requires renewal or outside factors demand work at the crossing, it must be upgraded to at least ABCL.the only other difference I can think of is that after the first couple were commissioned in Scotland we decided to stop providing emergency telephones, which is contrary to practice at existing ABCLs. As for MCB-ODs, there are a few workstation indications and failure modes which are different to a conventional MCB3. I might dig out the Standard later on. Log in to reply |
| Better notification of blocked manually operated LCs 23/01/2015 at 16:09 #68317 | |
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postal
5190 posts |
" said:All found here under the section how to deal with "A Pain In The Arse Failure" lol section 7.Broken link - hope this one works: http://www.rgsonline.co.uk/Rule_Book/Rule%20Book%20Modules/TS%20-%20Train%20Signalling/GERT8000-TS9%20Iss%203.pdf “In life, there is always someone out there, who won’t like you, for whatever reason, don’t let the insecurities in their lives affect yours.” – Rashida Rowe Log in to reply |
| Better notification of blocked manually operated LCs 24/01/2015 at 08:56 #68330 | |
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maxand
1637 posts |
Just following on from my "idiots" post (#39), I firmly believe that if you scratch a pedestrian who walks blindly across a LC, you will find a veteran jaywalker underneath. Likewise, if you scratch a motorist who runs boom gates you will find one that regularly runs red lights at intersections. You'll never be able to cure them unless you frighten them early enough during driver training. Natural selection will take care of the rest.
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| Better notification of blocked manually operated LCs 24/01/2015 at 09:19 #68331 | |
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Firefly
521 posts |
Quote:You'll never be able to cure them unless you frighten them early enough during driver training. Like this? Bet she doesn't do it again. FF Last edited: 24/01/2015 at 09:19 by Firefly Log in to reply |
| Better notification of blocked manually operated LCs 25/01/2015 at 02:50 #68356 | |
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maxand
1637 posts |
That was just luck, not driver or cyclist training.
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| Better notification of blocked manually operated LCs 25/01/2015 at 16:19 #68368 | |
MJD
149 posts |
Very very lucky to still be alive..
Mike. Log in to reply |
| Better notification of blocked manually operated LCs 04/02/2015 at 13:40 #68778 | |
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Jersey_Mike
250 posts |
What kind of alphabet soup is this crossing? :lol: https://www.acm.jhu.edu//~sthurmovik/Railpics/14-08-19_CAPITOL_CORRIDOR_SOUTH/UP_Niles-Sub-006.7-Franklin-xing-nb.html Log in to reply |
| Better notification of blocked manually operated LCs 04/02/2015 at 15:28 #68792 | |
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clive
2738 posts |
" said:What kind of alphabet soup is this crossing? :lol:OC (Open Crossing, not Occupation Crossing). Log in to reply |