(19)

(11)

EP 1 665 196 A2

(12)

(88) Date of publication A3: 16.03.2006 (43) Date of publication: 07.06.2006 Bulletin 2006/23 (21) Application number: 04816216.8 (22) Date of filing: 15.09.2004

(51) International Patent Classification (IPC):  G08G 1/07(1968.09) (86) International application number: PCT/US2004/030175 (87) International publication number: WO 2005/029437 (31.03.2005 Gazette 2005/13)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR Designated Extension States: AL HR LT LV MK (30) Priority: 15.09.2003 US 503144 P 24.03.2004 US 811075 (71) Applicant: CALIFORNIA INSTITUTE OF TECHNOLOGY Pasadena, CA 91125 (US)	(72) Inventor: BACHELDER, Aaron, D. Irvine, CA 92614 (US) (74) Representative: Newstead, Michael John et al Page Hargrave Southgate Whitefriars Lewins Mead Bristol BS1 2NT Bristol BS1 2NT (GB)