Grade crossing signalling activates when a train approaches from a distance, and continues to remain active until the last car of the train clears the crossing. If trains only passed in one direction, a single occupancy detector could activate crossing signals directly. When trains move in either direction, things become more complicated.
For bidirectional traffic, three detectors are needed: one for each approach on either side of the crossing, and the short section over the crossing itself. In one direction, signals are activated when one approach is occupied and remain active until the section over the crossing has cleared. In the other direction, signals are activated when the other approach section is occupied and remain active until the section over the crossing has cleared.
Our Grade Crossing Controller, or GCC for short, takes the occupancy information from three detectors (or six, for a double-track line), and determine if the crossing signals should be active or not.
Grade Crossing ControllerEmpty circuit board for one Grade Crossing Controller. 71 available for immediate shipment. | Grade Crossing ControllerEmpty circuit board for one Grade Crossing Controller. This item can be shipped within 2-3 business days. |
Grade Crossing Controller
This item is made to order and will ship within one week. | Grade Crossing Controller
This item is made to order and will ship within one week. |
Grade Crossing Controller
2 available for immediate shipment. | Grade Crossing Controller |
Triple Occupancy DetectorAssembled and tested Quad Occupancy Detector capable of track currents up to 4 amperes per block. Specifically produced for use with the Grade Crossing Controller. 7 available for immediate shipment. | Triple Occupancy DetectorAssembled and tested Triple Occupancy Detector capable of track currents up to 8 amperes per block. This item is made to order and will ship within one week. |
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2 available for immediate shipment.
Regular shipping fee based on location:
Tracked shipping is available to locations noted above. Contact us for information on other locations. Where tracking is available, a reduced priced non-tracked shipping option is available on small orders up to 200 grams. This option will appear automatically at the checkout when available. |
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Ordering multiple kits: When placing an order with more than two of the same kit, bulk packaging will be used. This means that instead of separately packaged kits, the required quantity of each component will be packaged together. One or two separate components needed for all kits will be in a plastic bag or IC tube with a label or labels applied to indicate the component. One hardcopy of the assembly and installation instructions will be included with the order. If you require individual kit packaging, you must email us in advance or at the time of ordering. |