Hi Norma, Regarding high signal heads, we have a number of these, all supplied and installed by Siemens. To my knowledge, we have never had a problem with them - apart from RTA's. They are obviously susceptible to the common problem of installers not always placing the locking split pins in the runners but as we always make a point of checking this, that is not a problem in Sefton. I note also that we have had less problems with the new Siemens Helios heads turning in the wind. Regards Peter Peter Jones Project Leader - Traffic Control Systems 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