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Line 1: {{Short description\|UK railway safety system}} The '''Driver's Reminder Appliance''' (DRA) was introduced in the design and operation of United Kingdom [[passenger trains]] in the 1990s<ref>http://www.rgsonline.co.uk/docushare/dsweb/Get/Rail-42673/rt0091_1.pdf original requirements for DRA</ref> in response to a series of railway accidents where a train driver had started away from a station stop against a red signal.<ref>http://www.hse.gov.uk/research/crr_pdf/2001/crr01334.pdf accident investigations including evaluation of DRA</ref> It is simply a manual switch that prevents power from being applied when it is turned on.<ref>http://rgsonline.co.uk/docushare/dsweb/Get/Rail-41176/RT2491.pdf functional requirements</ref> Drivers are required to set the DRA: {{EngvarB\|date=February 2018}} {{Use dmy dates\|date=February 2018}} [[File:Drivers Reminder Appliance.jpg\|thumb\|The DRA is the bright red button at top left of the driver's desk.]] A '''driver's reminder appliance''' ('''DRA''') is a manual switch in the driving cab of a passenger train. When operated it glows bright red and prevents the driver from being able to apply power.<ref>[http://www.rgsonline.co.uk/Railway_Group_Standards/Rolling%20Stock/Railway%20Group%20Standards/GMRT2491%20Iss%202.pdf functional requirements] {{webarchive \|url=https://web.archive.org/web/20120506141820/http://www.rgsonline.co.uk/Railway_Group_Standards/Rolling%20Stock/Railway%20Group%20Standards/GMRT2491%20Iss%202.pdf \|date=6 May 2012 }} at rgsonline.co.uk</ref> It was introduced in the design and operation of United Kingdom [[passenger trains]] in the 1990s<ref>[http://www.rgsonline.co.uk/Railway_Group_Standards/Control%20Command%20and%20Signalling/Railway%20Group%20Standards/GKRT0091%20Iss%201.pdf original requirements for DRA] {{webarchive \|url=https://web.archive.org/web/20120506141929/http://www.rgsonline.co.uk/Railway_Group_Standards/Control%20Command%20and%20Signalling/Railway%20Group%20Standards/GKRT0091%20Iss%201.pdf \|date=6 May 2012 }} at rgsonline.co.uk</ref> in response to a series of railway accidents where train drivers had [[signal passed at danger\|passed a signal at danger]] when starting away from a station.<ref>http://www.hse.gov.uk/research/crr_pdf/2001/crr01334.pdf {{Webarchive\|url=https://web.archive.org/web/20230606000655/http://www.hse.gov.uk/research/crr_pdf/2001/crr01334.pdf \|date=6 June 2023 }} accident investigations including evaluation of DRA</ref> * when stopped at a red signal ▼ * when leaving the cab * when stopped at a station where the last signal passed was displaying a caution aspect and the next signal is not visible == Operation == The DRA must only be reset when the signal has cleared to a proceed aspect on in the case of stopping when a cautionary aspect had been passed can be reset to proceed towards the next signal but serves as a reminder that the driver may be approaching a stop signal.<ref>http://rgsonline.co.uk/docushare/dsweb/Get/Rail-43796/GERT8000-TW1+Iss+8.pdf operational requirements (section 10.3)</ref> Use of the DRA is mandatory<ref name="TW1">[http://www.rssb.co.uk/rgs/rulebooks/GERM8000-traindriver%20Iss%202.pdf Driver's Rulebook: Module TW1 - Section 10.1] {{Webarchive\|url=https://web.archive.org/web/20180925215824/http://www.rssb.co.uk/rgs/rulebooks/GERM8000-traindriver%20Iss%202.pdf \|date=25 September 2018 }} at [[Rail Safety and Standards Board]]</ref> for drivers of British passenger trains and they are required by the Drivers' Rule Book to set it: * When closing down, entering or leaving the cab ▲* ~~when~~When the train is stopped at a red signal * When the train is stopped after passing a signal displaying a single yellow (caution) aspect. The DRA serves as a reminder that the driver may be approaching a stop signal. The DRA must only be reset: ~~The DRA fills a gap in the [[Automatic Warning System]].~~ * If there is no signal ahead, when the driver has authority to start the train. * When the signal ahead has cleared to a proceed aspect.<ref name="TW1" /> * When the driver has authority to pass the signal ahead at danger. == Advantages == [[File:DRA car stop sign.jpg\|thumb\|right\|DRA reminder sign on a station platform]] A passenger train driver can easily become distracted by station duties and forget that the next signal is at danger. This signal might be hidden from view until the train is close to it and there is insufficient braking distance. The DRA helps prevent this problem because resetting the DRA is the last action the driver will take before powering away from the station.<ref name="Rulebook M3 ">{{cite web\| title =Rulebook Master: Module TW1. Section 10.1 "Reset the DRA only when you have authority to start the train"\| url =https://www.rssb.co.uk/rgs/rulebooks/GERM8000-master-module%20Iss%201.pdf\| publisher =Network Rail\| format =pdf\| accessdate =2017-06-06\| archive-date =14 September 2016\| archive-url =https://web.archive.org/web/20160914022550/http://www.rssb.co.uk/rgs/rulebooks/GERM8000-master-module%20Iss%201.pdf\| url-status =dead}}</ref> ~~A passenger train driver is so used to accelerating when the guard gives the right of way bell signal, that they could easily overlook a red signal. The DRA helps prevent this problem.~~ == References == {{~~reflist~~Reflist\|30em}} == External links == * [https://web.archive.org/web/20110717113350/http://www.rgsonline.co.uk/Railway_Group_Standards/Rolling%20Stock/Railway%20Group%20Standards/GMRT2469%20Iss%201.pdf Railway Group Standards - 1997]▼ * [https://web.archive.org/web/20061108090740/http://halcrow.com/html/documents/pdf/australia/rm_management_spad_risk.pdf Halcrow report on SPADs and DRAs] [[Category:Railway safety]]▼ ▲* [http://www.rgsonline.co.uk/Railway_Group_Standards/Rolling%20Stock/Railway%20Group%20Standards/GMRT2469%20Iss%201.pdf Railway Group Standards - 1997] {{UK-rail-transport-stub}} ▲[[Category:Railway safety]]