Wireless Bidirectional DAXing
Eliminate Hard-Wired Connections for Downstream Crossing Activations
In a bidirectional DAX (Downstream Adjacent Crossing) application, two or more railroad crossing predictors communicate with each other in order to instruct adjacent crossing predictors to activate their warning devices at a constant warning time. The installation of DAX applications at railroad crossings requires a reliable communications link between each individual location to ensure no false activations of warning equipment occur. Traditionally, hard-wired DAX connections needed to be installed between crossings which requires the burying of cables - which may be very expensive to deploy.
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As opposed to burying new cables to support DAX applications, Ondas Networks FullMAX™ radios Mercury and Venus radios support "radio DAX" - vital communications wirelessly between railroad crossings. This enables railroads to install new crossings faster and at less expense as all crossing activation messages between crossings occurs via radio link - no burial of new cable is required.​​
Designed for Mission-Critical Vital Communications Links
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FullMAX™ radios operate in 802.16t Direct Peer-to-Peer (DPP) mode to implement a highly reliable and secure communications link. In DPP mode, all radios communicate directly as equal peers without the need for an intermediate base station. This enables vital communications sessions over-the-air with extremely low latency.
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Interference-Free Communication over Licensed Channels
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As opposed to ISM radios which operate in unlicensed bands, FullMAX ™Mercury radios operate in licensed AAR-owned frequencies such as the 900 MHz A Block. This makes deployment of vital wireless communications links much more secure and reliable as they are not subject to interference by radios operating on unlicensed bands which may be installed nearby. ​​​
Ondas Networks Mercury Radio
Wireless communication of vital crossing activation data