Arrangements for obstructing or restricting traffic, e.g. gates, barricades (for railway crossings B61L )

Child Classifications

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• E01F 13/02 free-standing;
• E01F 13/04 movable to allow or prevent passage
• E01F 13/10 Vehicle barriers specially adapted for allowing passage in one direction only
• E01F 13/12 for forcibly arresting or disabling vehicles, e.g. spiked mats