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10 Cards in this Set
- Front
- Back
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What are the 8 classifications of fixed signals (Acronym) |
DDDCRASH |
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Name the 8 classifications of fixed signals |
Disc Distant Dwarf Calling on Repeating Automatic Starting Home |
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All classifications normal aspect position is at 'Stop' except 3. What are they? |
Distant-Caution Repeating-Warning Automatic- Proceed |
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Why do these 3 show other aspects other than stop during their normal position? |
Distant @ Caution and Repeater @ warning because home's normal position is at 'Stop'. Automatic @ proceed as it is track circuited and switches to stop automatically when a train is in the section. |
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What is a 'Disc' signal usually used for? |
Shunting;
Siding to siding s-s Siding to mainline s-m Mainline to mainline m-m & Mainline to siding m-s
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What aspects can you get on a disc signal? |
Stop or proceed |
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What is a 'dwarf' signal generally used for? |
Shunting;
Mainline to Mainline m-m & Siding to Siding s-s |
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What apects may you see on a dwarf? |
Blue- Stop Green- Proceed (points set, proceed at 15kph) Yellow- low speed caution (points set, proceed at 15kph but line could be obstructed). |
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What does a distant signal tell you? |
Warns of the condition of the home signal |
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What colour lights will you get on a 'Distant' signal? |
Yellow - caution Green - proceed NEVER RED |
