[TCUG] Re: Loops and ASL's - an open question!
- From: Howard Saffer <Howard.Saffer@xxxxxxxxxxxxxxxx>
- To: "'tcug@xxxxxxxxxxxxx'" <tcug@xxxxxxxxxxxxx>
- Date: Thu, 20 Sep 2001 11:05:25 +0100
Thank you, Andrew - very interesting.
In relation to red light cameras, as ASLs have no 'legal' basis (as far as I
understand)- as they are not covered under TSRGD or other legislation - is it
actually a traffic 'offence' for a vehicle to pass through a vehicle stopline
if it were to stop at the ASL (and not progress through the junction)? I would
have thought that the provisions in the current TSRGD would be inadequate if
the matter were to come to court. After all, the Primary signal is normally
alongside the end of the ASL (is it not?)
Regards
Howard Saffer
Sheffield City Council
-----Original Message-----
From: Andrew Sawyer [mailto:andy.sawyer@xxxxxxxxxxxxxxxxxxxxxxx]
Sent: 19 September 2001 16:41
To: tcug@xxxxxxxxxxxxx
Subject: [TCUG] Re: Loops and ASL's - an open question!
I have designed and installed many installations with ASL's and D' loops. =
I have always located the loops at standard spacings from the vehicle =
stopline and not the advanced stop line. My thinking behind this is that =
it is no different to any vehicle stop line. All intergreens etc. are =
measured from the vehicle stop lines and vehicle extensions on the loops =
are not normally affected.
To reinforce this argument on one of our sites with ASL's and D' loops we =
have red light cameras installed. The cameras loops are installed and =
configured around the vehicle stopline as this is the requirement set out =
by our local police authority..
Regards
Andy Sawyer - Sefton M.B.C
>>> Howard.Saffer@xxxxxxxxxxxxxxxx 19 September 2001 15:38:18 >>>
Now there are some users enrolled out there - (and you're all probably fed =
up already with replies to Peter Bull from other users joining) - an open =
question - to get the ball rolling!
Recently we have mainly been installing MVDs with stopline loops on most =
of our schemes.
On a current scheme we want to install an advanced (cycle) stopline (ASL) =
- but need system D loops (in association with speed discrimination).
Do (you) other users set out your system 'D' loops 12, 25 and 39 metres =
from the vehicle stopline - or from the ASL? What is your rationale for =
whatever you do on this?
Howard Saffer
Traffic Signal Design
Sheffield City Council
The information in this email is confidential. The contents may not be =
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The information in this email is confidential. The contents may not be
disclosed or used by anyone other than the addressee. If you are not the
addressee, please tell us by using the reply facility in your email software as
soon as possible. Sheffield City Council cannot accept any responsibility for
the accuracy or completeness of this message as it has been transmitted over a
public network. If you suspect that the message may have been intercepted or
amended please tell us as soon as possible.
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