Why has safety improved at rail-highway grade crossings?

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      <subfield code="a">Why has safety improved at rail-highway grade crossings?</subfield>
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      <subfield code="a">The development in the 1970s and early 1980s of the operation lifesaver public education campaign, and the installation of addintional lights on locomotives in the 1990s, each led to about a seventh of the reduction on collisions and fatalities at railway-highway intersections.Finally, a major part of the reduction on this accidents is due to closure of crossings resulting from line abandonments of conslidation of little-used crossing</subfield>
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      <subfield code="g">Vol. 25, nº 4, August 2005 ; p. 867-881</subfield>
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