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INSP-65 - Rev. 3/2015
TOWN OF HUDSON
FIRE DEPARTMENT - INSPECTIONAL SERVICES DIVISION
12 School Street · Hudson, New Hampshire 03051 · Tel: 603-886-6005 · Fax: 603-594-1142
ELECTRONIC CHANGING SIGN AFFIDAVIT
The following information is the requirements from the Hudson Zoning Ordinance for all electronic
changing signs. These requirements are strictly enforced. All participants must read and initial each
zoning regulation below.
§ 334-59 Definition
ELECTRONIC CHANGING SIGN: Electronic message center (EMC), electronic message sign (EMS)
and changeable copy board (CCB) – Signs that display illuminated messages that can change
frequently, can flash, display and/or convey messages in text, graphics, pictures, symbols, multiple
colors, rhythms, animation and/or patterns. This sign's message may be changed by the electronic
switching of lamps, illuminated tubes, bulbs and/or through the apparent movement of light. These
signs are capable of storing and/or displaying single or multiple messages in various formats at
varying intervals. [Amended 3-10-2009 by Amdt. No. 2]
§ 334-60 General Requirements.
H. Electronic changing signs are allowed in the Business (B) and Industrial (I) zoning districts subject to
the requirements of § 336-64 (C) see below. Electronic changing signs shall be prohibited in the Town
Residence (TR), Residential (R-1, R-2) and General (G and G-1) zoning districts. __________
§ 334-64. Freestanding business and industrial signs
C. Electronic changing signs are allowed only as a component of a freestanding sign and shall conform
to the following minimum requirements along with all other requirements for freestanding signs
within the sign ordinance: [Added 3-9-2010 by Amdt. No 2] __________
(1) Definitions relevant to Electronic Changing Signs:
BRIGHTNESS - Also known as “Intensity”; the LED Industry measures display intensity in candelas
per square meter, which is also referred to as “NITS.”
DIMMING - The ability to increase or decrease the overall display intensity brightness.
DIODE - Also called “light emitting diode” (LED) or “surface mounted diode” (SMD).
LED (LIGHT EMITTING DIODE/SMD) - A solid-state component that uses a semiconductor (a silicon
chip or some type of semiconductor) that emits visible light when electric current passes through it.
LUMINANCE - The amount of light that passes through or is emitted from a particular area. The SI
unit for luminance is candela per square meter.
NIT or NITS - A luminance-measuring unit equal to one candela (one candle) per square meter
measured perpendicular to the rays from the source.
SI UNIT - An abbreviation for the International System of Units.
TEXT - Any form in which writing exists. __________
(2) No more than one (1) electronic changing sign shall be allowed per lot. __________
(3) Electronic changing signs shall not exceed 50% of the area of a freestanding sign or 50 square feet,
whichever is smaller. Electronic changing signs shall be restricted to a maximum of four lines of text
or message display, and text shall be restricted to a maximum of 10 inches in height. __________
(4) Electronic changing signs shall be required to have a minimum of 150 feet between other electronic
changing signs located on the same side of a street or roadway. __________
(5) Electronic changing signs shall be allowed only on lots with a minimum street frontage in accordance
with the Table of Minimum Dimensional Requirements. ___________