Signs of or required by a duly constituted governmental body or its agency where such signs are established in the interest of the safety, convenience or welfare of the general public, including traffic signs and legal notices.

One bulletin board not exceeding 15 square feet in area for a public, charitable or religious institution, when it is located on the premises of such institution.

Memorial plaques, cornerstones or historic tablets that are cut into the masonry surface or that are of a permanent type and made an integral part of the structure.

Residential identification signs designating name and house number, not exceeding two square feet in area.

Lettering on marquees denoting the attraction, film or exhibit being shown or to be shown by or in a theater containing the marquee.

"No trespassing," "posted" and "private drive" signs.

Signs not exceeding three square feet in area, identifying historic properties.

No sign shall be permitted that advertises any business or commercial activity unless it is a permitted or specially permitted use on the premises and is carried out on the premises. No sign shall be permitted on a lot where there is no residence.

In the case of a permitted home office or occupation, or specially permitted home business or trade, only one sign, whether designating a business or otherwise, shall be permitted for any single dwelling, and that sign shall not exceed two square feet in size. Where there are two or more units in a dwelling, no sign may exceed one square foot in area.

No part of any sign shall be placed within two feet of any property boundary. Mailbox signs identifying the house number and occupant of the lot and signs identifying historic properties are exempt from this regulation.

The source of illumination for signs shall be oriented or shielded so that it is not visible from any residence.

Subdivision identification signs shall designate the subdivision by name or symbol only. There may be no more than one such sign with a maximum total area of 12 square feet at each street entrance to the subdivision.

Any sign for a special permitted use in a residential area that is in excess of two square feet in area shall not be erected unless a variance has been granted by the Zoning Board of Appeals. The special use permit shall terminate with the transfer of the property to a new owner or with a change of use, and such sign shall be removed within 30 days thereafter.

Maximum sign area.

In no case shall a sign in a nonresidential district exceed 25% of the total area of the wall on the side of the structure on which such sign is to be placed.

All signs shall pertain only to goods sold, services rendered and establishments, enterprises, activities, persons, organizations and facilities on the lot where the sign is located. When the sale of such goods or the rendering of such services on the lot is terminated or when the establishment, enterprise, activity, person, organization or facility on such lot is moved, discontinued or otherwise terminated, all signs pertaining thereto shall be removed within 90 days after such termination.

No sign shall be located within a public right-of-way or project horizontally into a public right-of-way.

No sign shall be displayed which endangers traffic or pedestrians, causes confusion with official street signs or signals, obstructs the window of any door, ventilation system, fire escape or exit, or causes any other hazard to the public health and safety.

A variance granted by the Zoning Board of Appeals shall become invalid with a change of use.

Illumination.

No sign shall extend more than two feet beyond the face of a building, beyond the extension of a straight line of any face of the building, nor shall any freestanding sign be placed higher than the roof of the principal building on the premises.

Gasoline service stations shall be permitted two additional signs, not exceeding a total area of 12 square feet or six square feet per side, if located on the pump island, or set no closer than 10 feet from the edge of the pavement, so as not to impair visibility for pedestrians or motorists.

Political signs, which are designed to influence the action of voters for the passage or defeat of a measure or the election of a candidate or candidates to public office, shall be permitted as follows:

Signs advertising flea markets and garage sales. Any sign advertising a flea market, garage sale, barn sale, tag sale, or the like shall not be posted more than 10 days before the event it advertises and shall be removed within two days following the event.

Construction signs denoting the architect, engineer or contractor.

Real estate signs advertising the sale, rental or lease of a property.

Temporary window signs hung or affixed inside or outside windows.

Portable signs.

For a single residence or business.

For multiple residences and businesses.

A directory outside a building to identify multiple occupants shall have site plan or development plan approval from the Planning Board.

A freestanding directory may be permitted in addition to a directory on the facade of the structure.

The Planning Board shall adhere to the intent of this chapter with respect to design, location and size in issuing an approval; however, strict adherence to total area limitations of signs need not be observed for directories with multiple listings.

All directories placed outside of a building to identify multiple occupants shall prominently display the number of the street address of the building.