[TCUG] Re: Vandalism + ELV signals
- From: "Pat Gregory" <patrick.gregory2@xxxxxxxxxxxxxx>
- To: <tcug@xxxxxxxxxxxxx>
- Date: Mon, 5 Nov 2007 15:11:38 -0000
From a (YO!) street point of view! We have found that if anything the slide
and lock mounts for both corners are possibly too tight, which tend to break
the plastic bosses and their mounts rather than move out of alignment.
Although this sounds a contradiction in terms, unfortunately when the mounts
are damaged it makes it impossible to tighten the heads again without
replacing the mounting equipment. It would be preferable to have a mount
with some give, which would allow the signal head to be re-aligned and
tightened, rather than damage the mounting bosses. The grey corner's
friction mounts were pretty good for this! Of course best practice means
that the possibility of RTA damage would be designed out!!!!!
Regards
Pat Gregory
Director
Traffic and Transportation Services Ltd
74 Meadowside
Eltham
London
SE9 6BB
Tel/Fax: 0208 8505271
Mob: 07967 725039
-----Original Message-----
From: tcug-bounce@xxxxxxxxxxxxx [mailto:tcug-bounce@xxxxxxxxxxxxx] On Behalf
Of Morar Jag (ST)
Sent: 05 November 2007 13:57
To: tcug@xxxxxxxxxxxxx
Subject: [TCUG] Re: Vandalism + ELV signals
Further to my email of 30th October regarding 'ELV supplies and HA
specification' you will now appreciate that the problem will be further
exarcerbated by the fact that ELV controller outputs will be different for
the controllers from Blue and Red corners.
We must force the HA to be prescriptive on ELV supply!
Regards,
Jag
-----Original Message-----
From: tcug-bounce@xxxxxxxxxxxxx [mailto:tcug-bounce@xxxxxxxxxxxxx] On Behalf
Of Peter Jones
Sent: 05 November 2007 09:48
To: tcug@xxxxxxxxxxxxx
Subject: [TCUG] Re: Vanalism
I replaced all Mellor heads about 3 yrs ago at a junction with the original
Blue corner LED's. Unfortunately the failure rate was too high to make them
cost effective: 3 lamps in one year.
However, the new LED heads with the Centre mounted Led Source (***) have
proven very reliable and I am happy with them. In Sefton, we now have many
sites with these lanterns... good lantern design too.
The only dampener is that these particular heads cannot be converted (so I'm
told) to work with the new Extra Low Voltage controllers, they will have a
specifically designed LED head which obviously does not need a power supply.
So creating an ELV site where you have existing LED heads would not seem as
simple as replacing the controller and removing some PSU's.
I don't know if any kind of converter may become available, I will check
with Mr Blue. (Blue sky thinking required, presumably).
Regards
=20
Peter Jones
Principal Traffic Systems Engineer
Phone: +44 (0) 151 934 4254
Fax: +44 (0) 151 922 4514
Sefton MBC - UTC
3rd Floor
Magdalen House
30 Trinity Road
Bootle
L20 3NJ
>>> "Matthew Smith" <MASmith@xxxxxxxxxxxx> 05/11/2007 09:28 >>>
Quick straw poll.
What are peoples experiences with the robustness of signal heads from the
red and blue corner?
From practical experience does one survive up better than another.
Thanks
Matt Smith. Assistant Engineer
Engineering Design | Traffic Signals
Leicestershire Highways
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