MUTCD PART 8
Traffic Control for Railroad and Light Rail Transit Grade Crossings view pdf | view table 8B.1
Quick Reference: Sign Sizes for Roadway Type view chart
Highway Railroad Grade Crossing Advance Warning Signs
Crossing Advance Warning signs give motorists warning of a railroad crossing.
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PRODUCT ID: S(XXXX)W101(X)A(Y)
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Size of this Advance Railroad Warning Sign (XXXX):
(3636) 36" Diameter for use on Single Lane/Multi-Lane Roads
(4848) 48" Diameter for use on Expressway/Oversized for Enhanced Conspicuity
(3030) 30" Diameter for use on Low Volume Roads
(2424) 24" Diameter for use on Shared-Use Paths*
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Reflective Sheeting (X):
(H) High Intensity Prismatic
(3) DG3 Diamond Grade Cubed
(3)A(Y) Fluorescent DG3 Diamond Grade Cubed
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Material: .080" Aluminum
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MUTCD Sign Designation: W10-1
- Learn about Digitally Printed Traffic Signs

*Table 9B-1 shows the minimum sizes that may be used for grade crossing signs and plaques that face shared-use paths and pedestrian facilities. view table 9B.1