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Highway/Railroad crossing identifiers

Each highway-railroad crossing is assigned a unique identifier - a U.S. DOT/AAR crossing inventory number, normally referred to as an FRA number.  The number consists of six digits followed by a letter and is posted on a metal plate at each crossing.

FRA number on signal arm FRA number on crossbuck

Most highway-railroad crossings that are equipped with lights or lights and gates also have a sign posted that includes the railroad and a telephone number to contact in an emergency.

Emergency number on signal house Emergency number on crossbuck

To find the FRA number for a highway-railroad crossing remotely, the Federal Railroad Administration, Office of Safety Analysis' Web site includes a number of ways a user can query the highway-railroad crossing inventory information to identify a single or group of crossings.