New York Codes, Rules and Regulations
Title 17 - DEPARTMENT OF TRANSPORTATION
Chapter V - New York State Supplement To The National Manual On Uniform Traffic Control Devices For Streets And Highways-2009 Edition
Part 2 - Signs
Chapter 2C - Warning Signs And Object Markers
Section 2C.113 - DEAF CHILD AREA and BLIND CHILD AREA Signs (NYW7-6, NYW7-7)

Option:

01 The DEAF CHILD AREA (NYW7-6) and BLIND CHILD AREA (NYW7-7) signs (see Sign Drawing SD-W20) may be used where it is necessary to warn motorists to be especially alert for a child who may be unable to hear normal traffic sounds and respond to audio warnings, or a child who may be unable to perceive approaching traffic.

Guidance:

02 The DEAF CHILD AREA and BLIND CHILD AREA signs should not be used without the consent of the child's parents or legal guardian. The authority having jurisdiction over the highway on which these signs are placed should keep informed about the residences, areas of activity, and ages of the children involved, so that signs can be promptly removed when they are no longer needed.