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//upload.wikimedia.org/wikipedia/en/thumb/9/99/Question_book-new.svg/100px-Question_book-new.svg.png 2x" data-file-width="512" data-file-height="399" /></a></span></div></td><td class="mbox-text"><div class="mbox-text-span">This article <b>needs additional citations for <a href="/wiki/Wikipedia:Verifiability" title="Wikipedia:Verifiability">verification</a></b>.<span class="hide-when-compact"> Please help <a href="/wiki/Special:EditPage/Wayside_horn" title="Special:EditPage/Wayside horn">improve this article</a> by <a href="/wiki/Help:Referencing_for_beginners" title="Help:Referencing for beginners">adding citations to reliable sources</a>. Unsourced material may be challenged and removed.<br /><small><span class="plainlinks"><i>Find sources:</i> <a rel="nofollow" class="external text" href="https://www.google.com/search?as_eq=wikipedia&q=%22Wayside+horn%22">"Wayside horn"</a> – <a rel="nofollow" class="external text" href="https://www.google.com/search?tbm=nws&q=%22Wayside+horn%22+-wikipedia&tbs=ar:1">news</a> <b>·</b> <a rel="nofollow" class="external text" href="https://www.google.com/search?&q=%22Wayside+horn%22&tbs=bkt:s&tbm=bks">newspapers</a> <b>·</b> <a rel="nofollow" class="external text" href="https://www.google.com/search?tbs=bks:1&q=%22Wayside+horn%22+-wikipedia">books</a> <b>·</b> <a rel="nofollow" class="external text" href="https://scholar.google.com/scholar?q=%22Wayside+horn%22">scholar</a> <b>·</b> <a rel="nofollow" class="external text" href="https://www.jstor.org/action/doBasicSearch?Query=%22Wayside+horn%22&acc=on&wc=on">JSTOR</a></span></small></span> <span class="date-container"><i>(<span class="date">April 2018</span>)</i></span><span class="hide-when-compact"><i> (<small><a href="/wiki/Help:Maintenance_template_removal" title="Help:Maintenance template removal">Learn how and when to remove this message</a></small>)</i></span></div></td></tr></tbody></table> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Wayside_Horn.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/2/2b/Wayside_Horn.jpg/170px-Wayside_Horn.jpg" decoding="async" width="170" height="199" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/2/2b/Wayside_Horn.jpg/255px-Wayside_Horn.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/2/2b/Wayside_Horn.jpg/340px-Wayside_Horn.jpg 2x" data-file-width="1904" data-file-height="2231" /></a><figcaption>A pole-mounted wayside horn system with a flashing light to indicate that it is operational</figcaption></figure> <p>In <a href="/wiki/Rail_transport" title="Rail transport">rail transport</a>, a <b>wayside horn</b> is an audible signal used at <a href="/wiki/Level_crossing" title="Level crossing">level crossings</a>. They can be used in place of, or in addition to, the <a href="/wiki/Locomotive" title="Locomotive">locomotive</a>'s horn as the train approaches the crossing. They are often used in special railroad "quiet zones" in the <a href="/wiki/United_States" title="United States">United States</a>, where the <a href="/wiki/Train_driver" title="Train driver">engineer</a> is not required to sound the locomotive's horn at a crossing. This reduces the ambient noise at the crossing, which may be desirable in residential areas. Such railroad crossings may still require the traditional bells as part of the crossing signals in addition to the wayside horns. </p><p>One form is mounted on a pole at the crossing. The product is patented.<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Wayside_horn&action=edit&section=1" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Whistle_post" title="Whistle post">Whistle post</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Wayside_horn&action=edit&section=2" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-1">^</a></b></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.quietzonetech.com/index.php?q=products">"The Automated Horn System"</a>. Quiet Zone Technologies<span class="reference-accessdate">. Retrieved <span class="nowrap">April 23,</span> 2016</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=The+Automated+Horn+System&rft.pub=Quiet+Zone+Technologies&rft_id=http%3A%2F%2Fwww.quietzonetech.com%2Findex.php%3Fq%3Dproducts&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWayside+horn" class="Z3988"></span></span> </li> </ol></div></div> <div class="mw-heading mw-heading2"><h2 id="Further_reading">Further reading</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Wayside_horn&action=edit&section=3" title="Edit section: Further reading"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li>For regulation in the United States: 49 CFR 222.59</li></ul> <div class="navbox-styles"><style data-mw-deduplicate="TemplateStyles:r1129693374">.mw-parser-output .hlist dl,.mw-parser-output .hlist ol,.mw-parser-output .hlist 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style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Absolute_block_signalling" title="Absolute block signalling">Absolute block signalling</a></li> <li><a href="/wiki/Automatic_block_signaling" title="Automatic block signaling">Automatic block signaling</a></li> <li><a href="/wiki/Centralized_traffic_control" title="Centralized traffic control">Centralized traffic control</a></li> <li><a href="/wiki/Communications-based_train_control" title="Communications-based train control">Communications-based train control</a></li> <li><a href="/wiki/Direct_traffic_control" title="Direct traffic control">Direct traffic control</a></li> <li><a href="/wiki/European_Train_Control_System" title="European Train Control System">European Train Control System</a></li> <li><a href="/wiki/Moving_block" title="Moving block">Moving block</a></li> <li><a href="/wiki/Radio_Electronic_Token_Block" title="Radio Electronic Token Block">Radio Electronic Token Block</a></li> <li><a href="/wiki/Token_(railway_signalling)" title="Token (railway signalling)">Token</a></li> <li><a href="/wiki/Track_Warrant_Control" title="Track Warrant Control">Track Warrant Control</a></li> <li><a href="/wiki/Train_order_operation" title="Train order operation">Train order operation</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Signalling_control" title="Signalling control">Signalling control</a></th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Block_post" title="Block post">Block post</a></li> <li><a href="/wiki/Integrated_Electronic_Control_Centre" title="Integrated Electronic Control Centre">Integrated Electronic Control Centre</a></li> <li><a href="/wiki/Interlocking" title="Interlocking">Interlocking</a></li> <li><a href="/wiki/Lever_frame" title="Lever frame">Lever frame</a></li> <li><a href="/wiki/Rail_operating_centre" title="Rail operating centre">Rail operating centre</a></li> <li><a href="/wiki/Solid_State_Interlocking" title="Solid State Interlocking">Solid State Interlocking</a></li> <li><a href="/wiki/Westlock_Interlocking" title="Westlock Interlocking">Westlock Interlocking</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Railway_signal" title="Railway signal">Signals</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Application_of_railway_signals" title="Application of railway signals">Application of railway signals</a></li> <li><a href="/wiki/Cab_signalling" title="Cab signalling">Cab signalling</a></li> <li><a href="/wiki/North_American_railroad_signals" title="North American railroad signals">North American railroad signals</a></li> <li><a href="/wiki/Railway_semaphore_signal" title="Railway semaphore signal">Railway semaphore signal</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Train detection</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Axle_counter" title="Axle counter">Axle counter</a></li> <li><a href="/wiki/Track_circuit" title="Track circuit">Track circuit</a></li> <li><a href="/wiki/Track_circuit_interrupter" title="Track circuit interrupter">Track circuit interrupter</a></li> <li><a href="/wiki/Treadle_(railway)" title="Treadle (railway)">Treadle</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Train_protection_system" title="Train protection system">Train protection</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Advanced_Civil_Speed_Enforcement_System" title="Advanced Civil Speed Enforcement System">Advanced Civil Speed Enforcement System</a></li> <li><a href="/wiki/ALSN" title="ALSN">ALSN</a></li> <li><a href="/wiki/Anuncio_de_Se%C3%B1ales_y_Frenado_Autom%C3%A1tico" title="Anuncio de Señales y Frenado Automático">ASFA</a></li> <li><a href="/wiki/ATACS" title="ATACS">ATACS</a></li> <li><a href="/wiki/Automatic_train_control" title="Automatic train control">Automatic train control</a></li> <li><a href="/wiki/Automatic_train_operation" title="Automatic train operation">Automatic train operation</a></li> <li><a href="/wiki/Automatic_train_protection" title="Automatic train protection">Automatic train protection</a></li> <li><a href="/wiki/Automatic_Train_Protection_(United_Kingdom)" title="Automatic Train Protection (United Kingdom)">Automatic Train Protection (United Kingdom)</a></li> <li><a href="/wiki/Automatic_train_stop" title="Automatic train stop">Automatic train stop</a></li> <li><a href="/wiki/Automatic_Warning_System" title="Automatic Warning System">Automatic Warning System</a></li> <li><a href="/wiki/Automatische_treinbe%C3%AFnvloeding" title="Automatische treinbeïnvloeding">Automatische treinbeïnvloeding</a></li> <li><a href="/wiki/Balise" title="Balise">Balise</a></li> <li><a href="/wiki/Catch_points" title="Catch points">Catch points</a></li> <li><a href="/wiki/Chinese_Train_Control_System" title="Chinese Train Control System">Chinese Train Control System</a></li> <li><a href="/wiki/Cityflo_650_CBTC" title="Cityflo 650 CBTC">Cityflo 650 CBTC</a></li> <li><a href="/wiki/Continuous_Automatic_Warning_System" title="Continuous Automatic Warning System">Continuous Automatic Warning System</a></li> <li><a href="/wiki/Contr%C3%B4le_de_vitesse_par_balises" title="Contrôle de vitesse par balises">Contrôle de vitesse par balises</a></li> <li><a href="/wiki/EBICAB" title="EBICAB">EBICAB</a></li> <li><a href="/wiki/Intermittent_inductive_automatic_train_stop" title="Intermittent inductive automatic train stop">IIATS</a></li> <li><a href="/wiki/Integra-Signum" title="Integra-Signum">Integra-Signum</a></li> <li><a href="/wiki/Interoperable_Communications_Based_Signaling" title="Interoperable Communications Based Signaling">Interoperable Communications Based Signaling</a></li> <li><a href="/wiki/Crocodile_(train_protection_system)" title="Crocodile (train protection system)">Crocodile</a></li> <li><a href="/wiki/Linienzugbeeinflussung" title="Linienzugbeeinflussung">Linienzugbeeinflussung</a></li> <li><a href="/wiki/Positive_train_control" title="Positive train control">Positive Train Control</a></li> <li><a href="/wiki/Pulse_code_cab_signaling" title="Pulse code cab signaling">Pulse code cab signaling</a></li> <li><a href="/wiki/Punktf%C3%B6rmige_Zugbeeinflussung" title="Punktförmige Zugbeeinflussung">Punktförmige Zugbeeinflussung</a></li> <li><a href="/wiki/RS4_Codici" title="RS4 Codici">RS4 Codici</a></li> <li><a href="/wiki/SelTrac" title="SelTrac">SelTrac</a></li> <li><a href="/wiki/Sistema_Controllo_Marcia_Treno" title="Sistema Controllo Marcia Treno">Sistema Controllo Marcia Treno</a></li> <li><a href="/wiki/Syst%C3%A8me_d%27aide_%C3%A0_la_conduite,_%C3%A0_l%27exploitation_et_%C3%A0_la_maintenance" class="mw-redirect" title="Système d'aide à la conduite, à l'exploitation et à la maintenance">SACEM</a></li> <li><a href="/wiki/Railway_slide_fence" title="Railway slide fence">Slide fence</a></li> <li><a href="/wiki/Train_automatic_stopping_controller" title="Train automatic stopping controller">Train automatic stopping controller</a></li> <li><a href="/wiki/Train_Protection_%26_Warning_System" title="Train Protection & Warning System">Train Protection & Warning System</a></li> <li><a href="/wiki/Train_stop" title="Train stop">Train stop</a></li> <li><a href="/wiki/Trainguard_MT" title="Trainguard MT">Trainguard MT</a></li> <li><a href="/wiki/Transmission_balise-locomotive" title="Transmission balise-locomotive">Transmission balise-locomotive</a></li> <li><a href="/wiki/Transmission_Voie-Machine" title="Transmission Voie-Machine">Transmission Voie-Machine</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Crossing signals</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Level_crossing_signals" title="Level crossing signals">Level crossing signals</a></li> <li><a href="/wiki/Crossbuck" title="Crossbuck">Crossbuck</a></li> <li><a href="/wiki/Wigwag_(railroad)" title="Wigwag (railroad)">Wigwag</a></li> <li><a href="/wiki/E-signal" title="E-signal">E-signal</a></li> <li><a class="mw-selflink selflink">Wayside horn</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Manufacturers</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Adtranz" title="Adtranz">Adtranz</a></li> <li><a href="/wiki/Alstom" title="Alstom">Alstom</a></li> <li><a href="/wiki/A%C5%BDD_Praha" title="AŽD Praha">AŽD Praha</a></li> <li><a href="/wiki/Federal_Signal_Company" title="Federal Signal Company">Federal</a></li> <li><a href="/wiki/General_Electric" title="General Electric">General Electric</a></li> <li><a href="/wiki/General_Railway_Signal" title="General Railway Signal">GRS</a></li> <li><a href="/wiki/Griswold_Signal_Company" title="Griswold Signal Company">Griswold</a></li> <li><a href="/wiki/Hall_Signal_Company" title="Hall Signal Company">Hall</a></li> <li><a href="/wiki/Hitachi_Rail_STS" title="Hitachi Rail STS">Hitachi</a></li> <li><a href="/wiki/Magnetic_Signal_Company" title="Magnetic Signal Company">Magnetic</a></li> <li><a href="/wiki/Progress_Rail" title="Progress Rail">Progress Rail</a></li> <li><a href="/wiki/Safetran" title="Safetran">Safetran</a></li> <li><a href="/wiki/John_Saxby" title="John Saxby">Saxby</a></li> <li><a href="/wiki/Siemens_Mobility" title="Siemens Mobility">Siemens</a></li> <li><a href="/wiki/Smith_and_Yardley" title="Smith and Yardley">Smith and Yardley</a></li> <li><a href="/wiki/Thales_Rail_Signalling_Solutions" title="Thales Rail Signalling Solutions">Thales</a></li> <li><a href="/wiki/Union_Switch_%26_Signal" title="Union Switch & Signal">Union Switch</a></li> <li><a href="/wiki/Westinghouse_Brake_and_Signal_Company" title="Westinghouse Brake and Signal Company">Westinghouse Brake & Signal</a></li> <li><a href="/wiki/Westinghouse_Rail_Systems" title="Westinghouse Rail Systems">Westinghouse Rail Systems</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Organisations</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Association_of_American_Railroads" title="Association of American Railroads">AAR</a></li> <li><a href="/wiki/American_Railway_Engineering_and_Maintenance-of-Way_Association" title="American Railway Engineering and Maintenance-of-Way Association">AREMA</a></li> <li><a href="/wiki/European_Union_Agency_for_Railways" title="European Union Agency for Railways">ERA</a></li> <li><a href="/wiki/Federal_Railroad_Administration" title="Federal Railroad Administration">FRA</a></li> <li><a href="/wiki/His_Majesty%27s_Railway_Inspectorate" title="His Majesty's Railway Inspectorate">HMRI</a></li> <li><a href="/wiki/Institution_of_Railway_Signal_Engineers" title="Institution of Railway Signal Engineers">IRSE</a></li> <li><a href="/wiki/Transport_Canada" title="Transport Canada">Transport Canada</a></li> <li><a href="/wiki/International_Union_of_Railways" title="International Union of Railways">UIC</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">By country</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Australian_railway_signalling" title="Australian railway signalling">Australia</a></li> <li><a href="/wiki/Bavarian_railway_signals" title="Bavarian railway signals">Bavaria</a></li> <li><a href="/wiki/Belgian_railway_signalling" title="Belgian railway signalling">Belgium</a></li> <li><a href="/wiki/Canadian_Rail_Operating_Rules" title="Canadian Rail Operating Rules">Canada</a></li> <li><a href="/wiki/Chinese_railway_signalling" title="Chinese railway signalling">China</a></li> <li><a href="/wiki/Finnish_railway_signalling" title="Finnish railway signalling">Finland</a></li> <li><a href="/wiki/French_railway_signalling" title="French railway signalling">France</a></li> <li><a href="/wiki/Railway_signals_in_Germany" title="Railway signals in Germany">Germany</a></li> <li><a href="/wiki/Greek_railway_signalling" title="Greek railway signalling">Greece</a></li> <li><a href="/wiki/Italian_railway_signalling" title="Italian railway signalling">Italy</a></li> <li><a href="/wiki/Japanese_railway_signals" title="Japanese railway signals">Japan</a></li> <li><a href="/wiki/Dutch_railway_signalling" title="Dutch railway signalling">Netherlands</a></li> <li><a href="/wiki/Railway_signalling_in_New_Zealand" title="Railway signalling in New Zealand">New Zealand</a></li> <li><a href="/wiki/North_American_railroad_signaling" title="North American railroad signaling">North America</a></li> <li><a href="/wiki/Norwegian_railway_signaling" title="Norwegian railway signaling">Norway</a></li> <li><a href="/wiki/Polish_railway_signalling" title="Polish railway signalling">Poland</a></li> <li><a href="/wiki/Swedish_railway_signalling" title="Swedish railway signalling">Sweden</a></li> <li><a href="/wiki/Swiss_railway_signalling" title="Swiss railway signalling">Switzerland</a></li> <li><a href="/wiki/Thai_railway_signalling" title="Thai railway signalling">Thailand</a></li> <li><a href="/wiki/UK_railway_signalling" title="UK 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