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<br />Quiet Zone Evaluation 14 <br />New Brighton, Minnesota <br />Although not considered an SSM for a Quiet Zone, a wayside horn is recognized as <br />a one-to-one substitute for a train horn with the following conditions: <br />1. The rail crossing must be equipped with flashing lights and gates; a constant <br />warning time device, if reasonably practical; and a power-out indicator. <br />2. The horn system must be equipped with an indicator or other system to notify <br />the locomotive engineer as to whether the wayside horn is operating as <br />intended in sufficient time to enable the locomotive engineer to sound the <br />locomotive horn for at least 15 seconds prior to arrival at the crossing in the <br />event the wayside horn is not operating as intended. <br />3. The railroad must adopt an operating rule, bulletin, or special instruction <br />requiring that the train horn be sounded if the wayside horn indicator is not <br />visible approaching the crossing or if the wayside horn indicator, or an <br />equivalent system, indicates that the system is not operating as intended. <br />4. The horn system must provide a minimum sound level of 92 dB(A) and a <br />maximum of 110 dB(A) when measured 100 feet from the centerline of the <br />nearest track. <br />5. The horn system must sound at a minimum of 15 seconds prior to the train's <br />arrival at the crossing and while the lead locomotive is traveling across the <br />crossing. It is permissible for the horn system to begin to sound <br />simultaneously with activation of the flashing lights or descent of the crossing <br />arm. <br /> <br />