Assertion: railroad's train | /r/CapableOf | trip a track circuit
Facets:
value: before arriving at the crossing
type: TEMPORAL
value: near the crossing
type: LOCATION
Source sentences:
text: About 30 seconds before arriving at the crossing, the train trips a track circuit near the crossing, triggering the crossing signals.
text: Some level crossings that are located close to intersections with traffic lights program the signals with a preemption sequence so when the approaching train trips the track circuit, it not only activates the crossing signals, but also changes the traffic lights facing the crossing to green, to clear any traffic that may be queued on the crossing.