Are there any requirements related to quiet zones and wayside horns in the MUTCD?
The quiet zone requirements have been published in a Federal Railroad Administration rulemaking concerning Title 49, Part 222, of the Code of Federal Regulations (49 CFR 222). The MUTCD only contains information on the NO TRAIN HORN (W10-9) sign that shall be installed as a supplemental plaque below the W10-1 advance warning sign at each highway-rail grade crossing where there is a Federal Railroad Administration authorization for trains to not sound a horn. Also, the FHWA issued an Interim Approval (IA-2) in August 2004 allowing the use of wayside horns at grade crossings equipped with active devices under certain conditions. This Interim Approval can be viewed at: http://mutcd.fhwa.dot.gov/pdfs/waysidehorn8204.pdf (PDF 46KB). Return to Top Return to Frequently Asked Questions. You will need the Adobe Acrobat Reader to view the PDFs on this page.
