OPINION
BARKER, Judge.
¶ 1 BNSF Railway Company ("BNSF") appeals the judgment entered by the superior court affirming an October 21, 2009 order of the Arizona Corporation Commission ("Commission"). BNSF argues the superior court erred because the Commission's authority to approve or deny the installation of railroad wayside horns was preempted by federal law regulating the use of audible warnings at railroad crossings. For the following reasons, we...
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