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Priority to FR943963ApriorityCriticalpatent/FR1372618A/en
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Publication of FR1372618ApublicationCriticalpatent/FR1372618A/en
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
B61L29/32—Timing, e.g. advance warning of approaching train
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Mechanical Engineering
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FR943963A1963-08-061963-08-06
Device indicating the approach of trains at crossings of roads and tracks
ExpiredFR1372618A
(en)