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B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
B61L29/00—Safety means for rail/road crossing traffic
B61L29/24—Means for warning road traffic that a gate is closed or closing, or that rail traffic is approaching, e.g. for visible or audible warning
B61L29/28—Means for warning road traffic that a gate is closed or closing, or that rail traffic is approaching, e.g. for visible or audible warning electrically operated
B61L29/288—Wiring diagram of the signal control circuits
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Engineering & Computer Science
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Mechanical Engineering
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Train Traffic Observation, Control, And Security
(AREA)
DK51119D1933-08-231934-08-21Signalanlæg til Jærnbaneoverskæringer.
DK51119C
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