Documents Signalisation / Balisage 16 résultats

"( un nouveau concept : ""Eco-thieves"" ) Three signs similar to this one have been stolenThieves are believed to have stolen three solar-powered speed signs in Carmarthenshire in a bid to cut their energy bills. Eleven of the hi-tech units worth £10,000 each were put up by the county council as part of a road safety drive. But thieves armed either with a ladder or crane have taken three even though they stand five metres above ground. Two of the signs have disappeared from near the school in Peniel and the other from Dyffryn Road in Ammanford. The council's head of transport Trevor Sage said the signs were recently introduced at strategic locations as part of a road safety campaign. Motorists travelling too fast past an infra-red sensor are warned by the signs to slow down. They are not booked or fined but simply reminded of the speed limit in both English and Welsh. ""It could be someone with a grievance who thinks, completely wrongly, that they are being booked for speeding,"" said Mr Sage. But he said the more likely explanation was it was ""someone who is taking them to generate electricity"". Police believe at least two people are responsible as the panels were bolted to the top of the poles. This sign near Peniel is one of the ones that was stolen A spokesman for Dyfed-Powys Police said: ""It would have taken at least two men some time to get the panels down. ""The perpetrators would have had to have used a cherry picker or a high lifting machine to get them down."" Mr Sage said the signs had been particularly effective in reducing speeds near Peniel School from where two were taken. ""These panels are there for road safety purposes and have proved very effective, we have had a lot of positive feedback from communities,"" he added. ""Stealing them is risking lives and really compromising road safety."" Police have appealed for anyone with information to contact their local police station. Officers say the signs are easily identifiable as council property. - - - Voir aussi : http://news.bbc.co.uk/1/hi/wales/south_east/3569249.stm Solar warning to speeding drivers Friday, 26 March, 2004 Road signs which detect speeding drivers and flash warning messages to slow down are being used in south Wales for the first time. "[-]

Ces diodes electro luminescentes (DEL) de grande taille (diametre de 200 a 300 mm) sont destinees a remplacer les ampoules a incandescence dans les feux de signalisation, routiers et ferroviaires. Developpees par la societe JSC SVETLANA-OPTOELECTRONICS, elles sont deja commercialisees en Russie. Elles presentent deux types d'avantages competitifs sur les modeles classiques : - Une plus grande securite pour le trafic. Les chances de dysfonctionnement total sont fortement diminuees. Meme en cas de dysfonctionnement d'une partie de la diode, elle poursuit son emission. Elles eliminent les eventuels reflets solaires susceptibles d'induire en erreur et augmentent le contraste et la visibilite. - Une forte reduction des couts (5 fois moins qu'un neon) car les diodes ont une tres faible consommation d'energie et une duree de vie allongee. La societe SVETLANA-OPTOELECTRONICS, specialisee dans le developpement et la production de produits d'optique electronique equipe deja plusieurs villes russes (voies ferrees ou trafic routier). La publication de son propre catalogue est attendue dans les prochains mois. En dehors de l'eclairage urbain, ces diodes sont utilisees dans les panneaux publicitaires lumineux ainsi que l'ameublement. Il est a noter que la societe SVETLANA OPTOELECTRONICS s'est vue remettre le prix Global Energy l'annee derniere par M. Alferov, prix Nobel de physique 2000. Ces diodes sont vendues avec un garantie de 3 ans.[-]

Des systemes hybrides alimentes en energie solaire/eolienne pour la signalisation routiere etaient deja commercialises. Iwasaki Electric vient de proposer des systemes hybrides utilisant des LED comme source lumineuse. Cette application des LED a permis de reduire la taille des equipements notamment en divisant par deux la surface du panneau solaire, puisque les LED consomment moins que les sources conventionnelles. D'autre part, la duree de vie des systemes a ete allongee de 10.000 heures environ a 40.000. Les LED n'ont besoin d'etre changees qu'une fois tous les 18 ans environ (pour 6 heures de fonctionnement par jour). Contacts : Iwasaki Electric, 3-12-4, Shiba, Minato-ku, Tokyo, tel : +81 03 3452 5351, http://www.eye.co.jp Sources : The Nikkei Business Daily Tuesday edition, 02/03/2004[-]