citations for verification . please help improve this article by adding citations to reliable sources . unsourced material may be challenged and removed . august 2011 learn how and when to remove this template message cityflo 650 type radio based true moving block cbtc railway signalling system industry rail signalling headquarters bombardier transportation rail control solutions rsta nsv gen 29 stockholm sweden website cityflo 650 cbtc system cityflo 650 signalling is a cbtc system designed by bombardier transportation . it makes use of bi directional radio communication between trains and wayside equipment as well as true moving block technology to control train operation . trains report their position via radio and a wayside signalling system provides movement authorities to the trains via a radio link . transit lines using the system edit transit lines using the cityflo 650 system as of february 26 2014 include the following 1 in revenue service edit seattle tacoma int l airport seatac usa sacramento int l airport sacramento usa san francisco int l airport san francisco usa mccarran int l airport las vegas nv usa phoenix int l airport phoenix usa dallas fort worth int l airport dallas usa septa subway surface trolley lines usa heathrow int l airport uk gatwick int l airport uk line 1 and line 6 madrid metro spain yong in art south korea wenshan nehu line taipei taiwan line 3 shenzhen metro china pearl river line guangzhou metro china line 2 and line 3 tianjin metro china under construction tiradentes monorail s o paulo brazil line 5 s o paulo metro brazil munich airport germany sk dar mraniye ekmek y line turkey king abdulaziz int l airport jeddah saudi arabia king abdullah financial district monorail riyadh saudi arabia dubai int l airport united arab emirates line 7 delhi metro india purple line bangkok mrt thailand klang valley mrt malaysia test tracks pittsburgh test track usa kingston test track canada references edit cbtc map cf650 26 feb 2014 pdf . bombardier transportation . this rail transport related article is a stub . you can help wikipedia by expanding it . v t e retrieved from https en.wikipedia.org w index.php title cityflo 650 cbtc & oldid 723158295 categories train protection systemsvehicle telematicsrail transport stubshidden categories articles needing additional references from august 2011all articles needing additional referencesall stub articles navigation menu personal tools not logged intalkcontributionscreate accountlog in namespaces article talk variants views read edit view history more search navigation main pagecontentsfeatured contentcurrent eventsrandom articledonate to wikipediawikipedia store interaction helpabout wikipediacommunity portalrecent changescontact page tools what links hererelated changesupload filespecial pagespermanent linkpage informationwikidata itemcite this page print export create a bookdownload as pdfprintable version in other projects wikimedia commons languages edit links this page was last modified on 1 june 2016 at 10 59 . text is available under the creative commons attribution sharealike license ; additional terms may apply . by using this site you agree to the terms of use and privacy policy . wikipedia is a registered trademark of the wikimedia foundation inc. a non profit organization . privacy policy about wikipedia disclaimers contact wikipedia developers cookie statement mobile view