(19)

(11)

EP 1 786 979 A1

(12)

(43) Date of publication: 23.05.2007 Bulletin 2007/21 (21) Application number: 05776250.2 (22) Date of filing: 21.07.2005

(51) International Patent Classification (IPC):  E01C 23/06(2006.01) E01C 23/14(2006.01) (86) International application number: PCT/EP2005/008186 (87) International publication number: WO 2006/008187 (26.01.2006 Gazette 2006/04)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR (30) Priority: 21.07.2004 GB 0416244 (71) Applicant: Roads Europe Ltd Rugby, Warwickshire CV21 1DB (GB)	(72) Inventor: JONES, Mark Richard Lincs LN9 5LN (GB) (74) Representative: Chettle, Adrian John et al Withers & Rogers LLP Goldings House, 2 Hays Lane London SE1 2HW London SE1 2HW (GB)