Four-quadrant gate
id:
four-quadrant-gate-231-1637966
title:
Four-quadrant gate
text:
A four-quadrant gate or full-barrier equipment is a type of boom barrier gate protecting a grade crossing. It has a gate mechanism on both sides of the tracks for both directions of automotive traffic. The exit gates blocking the road leading away from the tracks are equipped with a delay, and begin their descent to their horizontal position several seconds after the entrance gates do, so as to avoid trapping highway vehicles on the crossing. In the United Kingdom, the exit-side barriers do not
brand slug:
wiki
category slug:
encyclopedia
description:
Level crossing protective system with four barriers
original url:
https://en.wikipedia.org/wiki/Four-quadrant_gate
date created:
2006-01-12T23:34:50Z
date modified:
2024-09-15T21:28:49Z
main entity:
{"identifier":"Q5474933","url":"https://www.wikidata.org/entity/Q5474933"}
image:
{"content_url":"https://upload.wikimedia.org/wikipedia/commons/a/ae/Level_crossing_-_Chertsey_-_England_-_270404.jpg","width":536,"height":353}
fields total:
13
integrity:
16