What is the proper placement of the Railroad Advanced Warning Sign?
The placement of the Railroad Advanced Warning Sign, W10-1, assumes that the approaching vehicle will be coming to a complete stop. To determine the required placement distance the posted speed or the 85th percentile speed, if greater than the posted speed, must be known. Using Table NY2C-4 in the New York State Supplement to the MUTCD under Condition B for the “Advanced Placement Distance”, the deceleration speed for the condition would be zero. Using the posted, or the 85th percentile speed, in the far left column go down to the proper speed for the condition and move horizontally across to the “Condition B – Zero Speed” column. This will be the required distance from the stop line at the railroad crossing to the sign placement.
Several things to note are that the W10-1 placement is measured from the stop line at the crossing, which is a minimum of 15 feet from the closest point on the rail. Second, it is important to refer to the NYS Supplement to the MUTCD Table NY2C-4 for the advanced placement distances since they are substantially different from the placement distances found in the National MUTCD Table 2C-4.
New York State Supplement to the National MUTCD, 2010 Edition, effective March 16, 2011. (PDF)