(19)

(11)

EP 0 431 032 A1

(12)

(43) Date of publication: 12.06.1991 Bulletin 1991/24 (21) Application number: 89909786.0 (22) Date of filing: 15.08.1989

(51) International Patent Classification (IPC):  G08G 1/ 133( . ) (86) International application number: PCT/GB1989/000938 (87) International publication number: WO 1990/002392 (08.03.1990 Gazette 1990/06)

(84) Designated Contracting States: BE DE FR GB IT NL SE (30) Priority: 16.08.1988 GB 19880019486 (71) Applicant: TRANSPORT INFORMATION SYSTEMS LIMITED Glasgow G62 6BW (GB)	(72) Inventor: PAGET, Gregory, Mark Lennie Park Edinburgh EH12 OAD (GB) (74) Representative: Pacitti, Pierpaolo A.M.E.  Murgitroyd and Company 373 Scotland Street Glasgow G5 8QA Glasgow G5 8QA (GB)