Difference between revisions of "Railroad signals"

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{{Portal|Transportation}}[[Category:Transportation]]
 
{{Portal|Transportation}}[[Category:Transportation]]
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Modern signaling uses one or two lights showing several aspects using the following colors: black (no lights) - Stop, white - Warning, blue - Clear, green - Restrictive.
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Modern line signals contains one white light bulb, and, if needed, a green light bulb. The background is reflective, so that the absent of light can easily be spotted. A blue colored light are created by raising and holding a weighted lens in front of the white light bulb. A single bulb signal can show 5 aspects, while a dual bulb signal can show 8 aspects. Dual bulb signals are used before diverging lines and station. All aspects are fail-safe. Opposing signals are places 1.5-2 [[reung|reungs]] ({{Measconv|target=mile|source=reung|measure=1.5|round=2}}-{{Measconv|target=mile|source=reung|measure=2|round=2}} mi/{{Measconv|target=km|source=reung|measure=1.5|round=2}}-{{Measconv|target=km|source=reung|measure=2|round=2}} km) apart as a protective measure against passing signals that has failed to stop aspect.
  
 
{{Table/Start|Signaling}}
 
{{Table/Start|Signaling}}
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{{Table/Heading|Signal}}
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{{Table/Heading|Aspect}}
 
{{Table/Heading|Meaning}}
 
{{Table/Heading|Meaning}}
 
{{Table/Heading|Speed limit per hour}}
 
{{Table/Heading|Speed limit per hour}}
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{{Table/Cell|No lights}}
 
{{Table/Cell|No lights}}
 
{{Table/Cell|Stop}}
 
{{Table/Cell|Stop}}
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{{Table/Cell|10 [[reung]] ({{Measconv|target=mile|source=reung|meassure=10}}/{{Measconv|target=km|source=reung|meassure=10}})}}
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{{Table/Cell|10 [[reung]] ({{Measconv|target=mile|source=reung|measure=10|round=0}} mi/{{Measconv|target=km|source=reung|measure=10|round=0}} km)}}
 
{{Table/Cell|}}
 
{{Table/Cell|}}
 
{{Table/Row}}
 
{{Table/Row}}
 
{{Table/Cell|white}}
 
{{Table/Cell|white}}
 
{{Table/Cell|warning}}
 
{{Table/Cell|warning}}
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{{Table/Cell|30 [[reung]] ({{Measconv|target=mile|source=reung|meassure=30}}/{{Measconv|target=km|source=reung|meassure=30}})}}
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{{Table/Cell|30 [[reung]] ({{Measconv|target=mile|source=reung|measure=30|round=0}} mi/{{Measconv|target=km|source=reung|measure=30|round=0}} km)}}
 
{{Table/Cell|stop}}
 
{{Table/Cell|stop}}
 
{{Table/Row}}
 
{{Table/Row}}
 
{{Table/Cell|flashing white}}
 
{{Table/Cell|flashing white}}
 
{{Table/Cell|high speed warning}}
 
{{Table/Cell|high speed warning}}
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{{Table/Cell|70 [[reung]] ({{Measconv|target=mile|source=reung|meassure=70}}/{{Measconv|target=km|source=reung|meassure=70}})}}
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{{Table/Cell|70 [[reung]] ({{Measconv|target=mile|source=reung|measure=70|round=0}} mi/{{Measconv|target=km|source=reung|measure=70|round=0}} km)}}
 
{{Table/Cell|warning}}
 
{{Table/Cell|warning}}
 
{{Table/Row}}
 
{{Table/Row}}
 
{{Table/Cell|green}}
 
{{Table/Cell|green}}
 
{{Table/Cell|restriction}}
 
{{Table/Cell|restriction}}
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{{Table/Cell|25 [[reung]] ({{Measconv|target=mile|source=reung|meassure=25}}/{{Measconv|target=km|source=reung|meassure=25}})}}
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{{Table/Cell|25 [[reung]] ({{Measconv|target=mile|source=reung|measure=25|round=0}} mi/{{Measconv|target=km|source=reung|measure=25|round=0}} km)}}
 
{{Table/Cell|divergence}}
 
{{Table/Cell|divergence}}
 
{{Table/Row}}
 
{{Table/Row}}
 
{{Table/Cell|green+white}}
 
{{Table/Cell|green+white}}
 
{{Table/Cell|restrictive warning}}
 
{{Table/Cell|restrictive warning}}
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{{Table/Cell|70 [[reung]] ({{Measconv|target=mile|source=reung|meassure=70}}/{{Measconv|target=km|source=reung|meassure=70}})}}
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{{Table/Cell|70 [[reung]] ({{Measconv|target=mile|source=reung|measure=70|round=0}} mi/{{Measconv|target=km|source=reung|measure=70|round=0}} km)}}
 
{{Table/Cell|restriction}}
 
{{Table/Cell|restriction}}
 
{{Table/Row}}
 
{{Table/Row}}
 
{{Table/Cell|green+blue}}
 
{{Table/Cell|green+blue}}
 
{{Table/Cell|restrictive clear}}
 
{{Table/Cell|restrictive clear}}
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{{Table/Cell|85 [[reung]] ({{Measconv|target=mile|source=reung|meassure=85}}/{{Measconv|target=km|source=reung|meassure=85}})}}
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{{Table/Cell|85 [[reung]] ({{Measconv|target=mile|source=reung|measure=85|round=0}} mi/{{Measconv|target=km|source=reung|measure=85|round=0}} km)}}
 
{{Table/Cell|restrictive warning}}
 
{{Table/Cell|restrictive warning}}
 
{{Table/Row}}
 
{{Table/Row}}
 
{{Table/Cell|blue}}
 
{{Table/Cell|blue}}
 
{{Table/Cell|clear}}
 
{{Table/Cell|clear}}
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{{Table/Cell|115 [[reung]] ({{Measconv|target=mile|source=reung|meassure=115}}/{{Measconv|target=km|source=reung|meassure=115}})}}
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{{Table/Cell|115 [[reung]] ({{Measconv|target=mile|source=reung|measure=115|round=0}} mi/{{Measconv|target=km|source=reung|measure=115|round=0}} km)}}
 
{{Table/Cell|any signal except stop}}
 
{{Table/Cell|any signal except stop}}
 
{{Table/Row}}
 
{{Table/Row}}
 
{{Table/Cell|flashing blue}}
 
{{Table/Cell|flashing blue}}
 
{{Table/Cell|high speed clear}}
 
{{Table/Cell|high speed clear}}
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{{Table/Cell|140 [[reung]] ({{Measconv|target=mile|source=reung|meassure=140}}/{{Measconv|target=km|source=reung|meassure=140}})}}
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{{Table/Cell|140 [[reung]] ({{Measconv|target=mile|source=reung|measure=140|round=0}} mi/{{Measconv|target=km|source=reung|measure=140|round=0}} km)}}
 
{{Table/Cell|clear}}
 
{{Table/Cell|clear}}
 
{{Table/Row}}
 
{{Table/Row}}
 
{{Table/End}}
 
{{Table/End}}

Latest revision as of 23:22, 19 March 2013

Transportation template.png Transportation portal

Modern line signals contains one white light bulb, and, if needed, a green light bulb. The background is reflective, so that the absent of light can easily be spotted. A blue colored light are created by raising and holding a weighted lens in front of the white light bulb. A single bulb signal can show 5 aspects, while a dual bulb signal can show 8 aspects. Dual bulb signals are used before diverging lines and station. All aspects are fail-safe. Opposing signals are places 1.5-2 reungs (1.06-1.42 mi/1.71-2.28 km) apart as a protective measure against passing signals that has failed to stop aspect.

 Signaling 
  Aspect     Meaning     Speed limit per hour     Expect  
  No lights     Stop     10 reung (7 mi/11 km)      
  white     warning     30 reung (21 mi/34 km)     stop  
  flashing white     high speed warning     70 reung (50 mi/80 km)     warning  
  green     restriction     25 reung (18 mi/29 km)     divergence  
  green+white     restrictive warning     70 reung (50 mi/80 km)     restriction  
  green+blue     restrictive clear     85 reung (60 mi/97 km)     restrictive warning  
  blue     clear     115 reung (82 mi/131 km)     any signal except stop  
  flashing blue     high speed clear     140 reung (99 mi/160 km)     clear  
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