Level Crossing Design - MCB and AHBC

Key Features

• Technical terms and relay names explained in "plain English"
• Full operation sequence for each crossing type

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Function, appearance and diagrammatic representation of common level crossing components

• Barriers, pedestals, controlling and proving circuits
• Road Lights, flasher units and lamp proving
• Audible Warning units and controllers
• Treadles – Normal and Reverse contacts
• Local Control Unit

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Manually Controlled Barrier Crossing

• Operational requirements and control tables
• Understanding of Circuitry
• Function of all relays and circuits
• Operation sequence
• Auto Raise function

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Automatic Half Barrier Crossing

• Operational requirements and control tables
• Understanding of Circuitry
• Function of all relays and circuits
• Operation sequence
• Single track and double track bidirectional
• Signals within strike-in zone
• Stopping/ Non stopping controls
• Indications and alarms
• Control table and typical circuits for these level crossings

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