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What does AR stand for?

AR stands for All Rail

This definition appears very frequently

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We have 156 other meanings of AR in our Acronym Attic

Samples in periodicals archive:

In addition, for all rail cars acquired from the sixties to the eighties, CTA is implementing a Communications Enhancement Program in which intercoms will be used for passengers to talk to train operators; automated stop announcements will have a digitally recorded professional announcer's voice for standard announcements; the operator will make special announcements, such as express runs; and cars will have light-emitting diodes (LED's) mounted on the interior of the destination sign boxes to signal express runs, especially for deaf and hearing-impaired riders.