Chris, I trialled LED heads (though not Peek, to be fair) at a junction in Sefto= n but was disappointed at the failure rate; three in one year. As the fau= lt could only be cured by replacing the driver equipment which is not che= ap and so, puts the maintenance cost way above that for normal lamps. I = am questioning the current state of this technology.=20 I monitored energy at the LED site and an identical site elsewhere (both = have T200 controllers, an OTU and 8 heads with no dimming) by fitting ele= ctricity meters. In the 19 months from March 2003, the LED site used 218= 1kw, whereas the non-LED site used 2591, a difference of around 16%. Howe= ver, bearing in mind the initial cost and the three repairs, the costs fa= r out way any possibility of savings. On a brighter note, I understand that a new 'single source' LED head is b= eing developed in the BLUE corner (hope I got that right - adjacent to th= e deep blue sea... or pool!), which promises to be much cheaper to buy an= d more reliable and I intend to try these as soon as possible. I've not y= et heard of any long term successful trials with first generation LED hea= ds. Regards Peter Peter Jones Principal Traffic Systems Engineer Phone: +44 (0) 151 934 4254 Fax: +44 (0) 151 922 4514 Mobile: 07788 100 584 Peter.Jones (AT) technical.sefton.gov.uk Sefton MBC - UTC 7th Floor Balliol House Balliol Road Bootle L20 3NJ Please see our web pages on traffic control in Sefton: http://www.sefton.gov.uk/content-2781 ----------------------------------------------------------- A message from the TCUG mailing list. For information about the list visit //www.freelists.org/webpage/tcug