Method and apparatus for indicating the presence of a train at a railroad crossing
OwnerBernard E. Speranzainventor
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Abstract
A method and apparatus for indicating the presence of one or more trains near a railroad crossing having at least two train tracks. The signaling system has a first sensor for detecting the presence of the first train near or approaching the railroad crossing and a second sensor for detecting the presence of the second train near or approaching the railroad crossing. A warning signal having a first and second mode is responsive to the sensors such that the detection of either the first train or the second train generates the first mode warning signal and the detection of both the first train and the second train generates the second mode warning signal.
Claims20
A signaling system for indicating the presence of a first train and a second train near a railroad crossing having at least two train tracks, the signaling system comprising:
- a first sensor for detecting the presence of the first train near the railroad crossing on a first railroad track;
- a second sensor for detecting the presence of the second train near the railroad crossing on a second railroad track;
- and,
- a warning signal comprising a first mode and a second mode, the warning signal being responsive to the first and second sensors such that the detection of either the first train or the second train generates the first mode warning signal and the detection of both the first train and the second train generates the second mode warning signal.
A signaling system for indicating the presence of a first train and a second train near a railroad crossing having at least two train tracks, the signaling system comprising:
- a first sensor for detecting the presence of the first train near the railroad crossing on a first railroad track;
- a second sensor for detecting the presence of the second train near the railroad crossing on a second railroad track;
- a first signal generated in response to the first sensor detecting the presence of the first train near the railroad crossing;
- a second signal generated in response to the second sensor detecting the presence of the second train near the railroad crossing;
- and,
- a warning signal comprising a first mode and a second mode, the warning signal being responsive to the first and second signals such that the detection of either the first train or the second train generates the first mode warning signal and the detection of both the first train and the second train generates the second mode warning signal.
A method for generating a warning signal at a railroad crossing having at least two train tracks, the method comprising the steps of:
- providing a first sensor for detecting the presence of a first train near the railroad crossing on a first railroad track and a second sensor for detecting the presence of a second train near the railroad crossing on a second railroad track;
- sensing the first train near the railroad crossing;
- sensing the second train near the railroad crossing;
- and,
- generating the warning signal comprising a first mode and a second mode, the warning signal being responsive to the sensing of the first and second train wherein the first mode warning signal is generated when either the first or second train is near the railroad crossing and the second mode warning signal is generated when both the first and second train are near the railroad crossing.
A signaling system for indicating the presence of a first train and a second train near a railroad crossing, the signaling system comprising:
- a warning signal with a first mode, the warning signal being operably responsive to a first sensor and a second sensor and a second mode warning signal being operably responsive to the first and second sensors, wherein the detection of either the first train or the second train generates the first mode warning signal and the detection of both the first train and the second train generates the second mode warning signal.
Dependencies are inferred from the claim text.