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Priority to FR859497ApriorityCriticalpatent/FR1287838A/fr
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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
B61L29/30—Supervision, e.g. monitoring arrangements
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FR859497A1961-04-211961-04-21Dispositif de sécurité à l'intersection de deux voies notamment d'une voie ferrée et d'une route
ExpiredFR1287838A
(fr)
Dispositif de sécurité formant butoir escamotable d'arrêt pour ponts roulants ou analogues à chemin de roulement amovible et ses diverses applications