00A The EXEMPT (R15-3P) regulatory plaque (see Figure 8B-1) and EXEMPT (W10-1aP) warning plaque (see Figure 8B-4) shall be used only at locations approved by the New York State Department of Transportation.

00B The EXEMPT regulatory plaque shall be used at grade crossings where the statutory stop normally required for certain vehicles by Section 1171 of the New York State Vehicle and Traffic Law has been legally waived by the New York State Department of Transportation. The EXEMPT regulatory plaque shall not be used on crossings involving high speed rail traffic.

00C The EXEMPT (W10-1aP) warning plaque shall be used in advance of grade crossings where the Department of Transportation has authorized use of EXEMPT (R15-3P) regulatory plaques unless the Department has also authorized omission of the Grade Crossing Advance Warning sign.

00D These supplemental plaques inform drivers of vehicles carrying passengers for hire, school buses carrying students, or vehicles carrying hazardous materials that a stop is not required at certain designated grade crossings, except when a train, locomotive, or other railroad equipment is approaching or occupying the grade crossing, or the driver's view is blocked. Where the statutory stop normally required of certain vehicles by Section 1171 of the New York State Vehicle and Traffic Law has been legally waived by the New York State Department of Transportation, the EXEMPT (R15-3P) regulatory plaque is intended for use at abandoned crossings, infrequently used crossings, and others whereas the EXEMPT (W10-1aP) warning plaque is for use to supplement the Grade Crossing Advance Warning (W10-1) sign in advance of grade crossings.