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(11)

EP 3 329 050 A1

(12)

(43) Date of publication: 06.06.2018 Bulletin 2018/23 (21) Application number: 16744507.1 (22) Date of filing: 26.07.2016

(51) International Patent Classification (IPC):  E01B 31/17(2006.01) (86) International application number: PCT/GB2016/052278 (87) International publication number: WO 2017/017432 (02.02.2017 Gazette 2017/05)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: MA MD (30) Priority: 27.07.2015 GB 201513150 (71) Applicant: Transport For London London, Greater London SW1H 0TL (GB)

(72) Inventors: CROSS, Mark London Greater London SW1H 0TL (GB) MADDERSON, Graham London Greater London SW1H 0TL (GB) ROSE, John London Greater London SW1H 0TL (GB) CLARKE, Marc London Greater London E15 2SP (GB) NICOLSON, Darren London Greater London E15 2SP (GB) KAYE, Michael Sheffield Yorkshire S4 8LJ (GB) SHAW, Joe Sheffield Yorkshire S4 8LJ (GB) YARROW, Andrew Sheffield Yorkshire S4 8LJ (GB) (74) Representative: CSY London  10 Fetter Lane London EC4A 1BR London EC4A 1BR (GB)