Other Requirements
Clarification notes: In order to be constitutionally sound, a code should keep the list of "exempted" signs to an absolute minimum if the exemptions are based on: |
- differentiating between uses and/or who is speaking, as this would represent a control of content based on the status of the "speaker"; |
- or if there can be some perceived discrimination between certain types of signs that are exempt from the code, and others that fall within the parameters of the code. A properly drafted sign code will avoid, as often as possible, making distinctions between uses and/or speakers. |
Clarification notes: This model code recommends that cities include language that makes "prohibited" signs general in nature; all municipalities have different regulatory and community needs in regard to available signs types. "Regulation" over "prohibition" is always preferred, from a legal and constitutional perspective. This commentary to the USSC Model Sign Code merely suggests that the above noted sign types are often included by cities in their sign code "prohibitions" section. |
FIGURE A |
Clarification notes: The intent of this section is to describe how freestanding sign height is determined: by measuring from the grade level directly beneath the freestanding sign to the top of the sign. An exception is included in order to assist adopting jurisdictions in conserving resources and to avoid unnecessary zoning appeals, as illustrated below [in subsection (b) above]. |
If a freestanding sign is installed along a roadway that is elevated as compared to grade level around the freestanding sign, then there is the potential that the freestanding sign will sit too low as compared to motorists on the roadway, and sign visibility and legibility will be compromised. The exception is a reasonable adjustment to address this type of situation administratively via the routine sign permit application, and will allow jurisdictions to avoid the bureaucratic time and expense involved in hearing zoning appeals filed to address the height disparity. |
Clarification notes: It is the intent of this model code to give a specific overall sign area allowance to a residential property, and no more. It is then up to the individual property owner how the overall sign area is apportioned. This relieves the city from the responsibility of making differentiations and distinctions between types of signs and speech on residential properties and its attendant constitutional implications. The model code recommends a maximum area of eight (8) square feet as a reasonable allowance that will meet most residential sign needs -particularly if there is more than one sign involved, if even on a temporary basis (for instance, a political sign and a contractor's sign). |
TABLE 1. SIGNS IN RESIDENTIAL DISTRICTS | ||||
|---|---|---|---|---|
Types of Signs Allowed | Number of Signs Allowed | Permitted Sign Area | Maximum (if applicable) | |
Residential properties including single-family detached, townhomes | Freestanding or wall | Any number so long as the total SF of all signs does not exceed 8 SF per frontage | 8 SF | 6' 0" |
Residential subdivisions, apartment complexes, multifamily dwellings, condominiums | Freestanding | One per frontage | 64 SF | 15' 0" |
Wall | One per facade | 5% of facade | – | |
Incidental or directional | Unlimited 6 SF | 8'-0" | ||
Permitted nonresidential uses in residential zones | Freestanding | One per frontage | 48 SF | 15' 0" |
Wall | One per facade | 5% of facade | – | |
Incidental or directional | Unlimited | 6 SF | 8' 0" | |
Electronic message centers are allowed by special exception on properties where permitted nonresidential uses in a residential zone are located | ||||
Freestanding signs in commercial and industrial districts values indicated are maximum limits on sign size and height. |
A = Sign area in square feet; H = Sign height in lineal feet |
TABLE 2 Zoning District | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Speed Limit | Downtown | Neighborhood Commercial | Highway Commercial | Industrial | Limited Access Highway | |||||
A | H | A | H | A | H | A | H | A | H | |
25 | 24 | 14 | 50 | 22 | 78 | 26 | 78 | 26 | ||
30 | 28 | 16 | 72 | 26 | 112 | 30 | 112 | 30 | ||
35 | 32 | 18 | 98 | 30 | 153 | 36 | 153 | 36 | ||
40 | 128 | 34 | 200 | 42 | 200 | 42 | ||||
45 | 162 | 38 | 253 | 48 | 253 | 48 | ||||
50 | 200 | 42 | 312 | 52 | 312 | 54 | ||||
55 | 378 | 56 | 378 | 60 | 457 | 66 | ||||
60 | 450 | 60 | 450 | 66 | 544 | 70 | ||||
65 | 639 | 74 | ||||||||
70 | 741 | 78 | ||||||||
75 | 850 | 86 | ||||||||
TABLE 3. PARALLEL SIGNS | |
|---|---|
Distance of Sign from Road or Adjacent Commercial or Industrial Zone | Percentage of Building Elevation Facade Permitted for Sign Area |
0 to 100 feet | Fifteen (15%) |
101 to 300 feet | Twenty (20%) |
Over 301 feet | Twenty-five (25%) |
Clarification notes: Tables #2 and #3 above are included in order to provide the local city with specific dimensional values for sign area, sign size and sign height, all based on existing scientific research related to on-premises signs. The intent of this code is to provide guidelines for the regulation of on-premises sign dimensions that are based on scientific principles, and thereby assist the local city in crafting a sign code that is fact-based, and to eliminate subjective or individual preferences, which can vary greatly. |
These standards are objective in nature. They have their basis in furthering the interests of traffic safety. They will insure that on-premises signs in the commercial and industrial zones have adequate visibility and legibility for motorists, again in the interests of public safety. |
The primary goal of these standards is to insure that all on-premises signs have sufficient area and height to provide a motorist with adequate time and travel distance to detect a sign, read and understand its contents, and then execute an appropriate driving maneuver. Factors that would impede this process (making the sign smaller, lowering its height) would be at odds with traffic safety principles, and should be avoided by a local city, assuming that the goal of public and motorist safety is paramount. |
Clarification notes: Canopy signs, marquee signs and signs on architectural projections are special sign applications. Although they are unique, they should be provided for in comprehensive sign code. An example of a canopy sign would be lettering installed on a canopy over a series of gas pumps at a service station -it is neither a true wall sign nor freestanding sign. An example of a marquee sign would be lettering and graphics displayed on the front and sides of a theater marquee that projects out over a portion of a downtown sidewalk. An example of a sign on an architectural projection would be letters installed on a decorative masonry feature that projects off a building face. |
Clarification notes: The above exceptions for projecting signs, awnings and marquees and A-frame signs are included for municipalities where an area of special interest or a central town district has been created with features such as sidewalks, buildings located close to the street or roadway, no front lawns or landscaped areas, substantial pedestrian traffic in addition to vehicular traffic. |
Clarification notes: | |
1. | Electronic message center control and code enforcement issues have become a matter of great interest at the municipal level across the United States. This interest has been spurred primarily by the availability of EMC technology, its increasing quality, and the interest of sign owners/end users in utilizing the technology. |
2. | Most EMC signs installed today are illuminated via LEDs, or light emitting diodes. LEDs are the current industry standard for the illumination of EMC signs, and it is likely that this will remain so for the near future, until another technology is perfected that is both tolerant to outdoor environmental conditions, sufficiently bright, and cost effective. There may be other sources of illumination in the near future, so the term EMC is intended to refer to any on-premises sign that can display messages and change them at regular intervals via a computer-controlled interface. |
3. | From a legal and practical standpoint, experience indicates that local control of EMC signs is preferred over an outright ban. Some communities have attempted to implement a prohibition on EMC signs, but it should be noted that there has been a heavy cost associated with these types of bans -legal and administrative costs to the city to defend such a ban; acrimony created within the community by the denial of this new communication technology without a scientific or traffic safety research basis; loss of the benefits created by enhanced EMC communication. In addition, a substantial percentage of EMC signs are installed at churches, municipal buildings, libraries, fire and rescue facilities, hospitals and outpatient medical offices. Therefore, a more prudent and balanced approach to EMC regulation based on sound scientific principles may serve the local AHJ in both the long and short terms. |
4. | In regard to traffic safety issues and EMC signs, a local city can rely on this statement to be true: up to this time, research has shown no correlation between EMC signs and traffic accidents, and EMC signs have not been found to be a distraction having impact on the driving task or to cause unsafe driving behavior that causes an accident in driver distraction studies. Some have offered opinions and theories about EMC signs and so called distractions, but there has been no direct scientific research on these distractions and EMC signs. The term "distraction" in and of itself is a pejorative term, suggesting a negative outcome or result. What research on motorist behavior has shown is that drivers engage in a wide variety of activities while operating a motor vehicle, and some for two (2) seconds or longer. Some activities that drivers engage in have a positive effect on motorist performance, even though the driver's eyes are away from the road. Examples of this would be checking the rear view mirror, checking the side mirrors, or checking the speedometer. Other activities that drivers engage in have a demonstrated negative effect on motorist performance -most notably cell phone use and texting while driving. Finally, other activities appear to have no effect either way -positive or negative -on driver performance, and EMC signs fall into this category. Drivers look at EMC signs but their driving performance is not affected, and that is why accident and driver distraction research fails to show any correlation with EMC signs. |
5. | All stakeholders agree that EMC lighting levels must be adjusted at night. In order for an EMC to be visible and legible during the day, the EMC sign must be energized or illuminated -it must have sufficient brightness to be seen while the sun is present. At night, however, EMC brightness must be adjusted to a much lower level, so that the sign is not over-bright and/or create glare so that a motorist cannot read the sign. Most EMC manufacturers have technology built into their products to accomplish this lighting level adjustment, typically using photocells and/or software timing controls. Section 9.03.270 coordinates with the general lighting standards of this code contained in section 9.03.271 (Sign illumination standard)s to insure that all EMCs have an appropriate lighting level at night, based on the needs of the motorist and traffic safety. This standard is a "luminance" standard, or an objective measurement and control of the actual brightness of the EMC sign, based on on-premises sign research. |
6. | Section 9.03.270 provides regulations for "display time" on an EMC sign. Display time is sometimes also referred to as a "change rate," and is intended to describe the rate at which a message can be changed on the EMC display panel. |
7. | EMC signs are capable of a wide range of dynamic message and image presentations as well as visual effects including simple scrolling or moving message effects to full video display. Since no negative correlation between on-premises EMC signs and traffic safety has been demonstrated by current research, any restriction on the various operational capabilities of EMC signs are necessarily imposed for aesthetic purposes only. In placing operational restrictions on EMC sign use in residential and professional zones as an aesthetic consideration, this model accepts the premises that these zones are not normally commercially active, and do not require the more visually dynamic forms of on premises communication necessary for the rapid transfer of commercial speech in commercial and/or industrial zones. |
Since neither an aesthetic nor traffic safety justification can be advanced for placing similar restrictions on the dynamic operational capabilities of EMC signs in commercial and/or industrial zones, the model -except for prohibition of flashing and provision that video display be subject to special exception -places no specific prohibitions on EMC operational usage in those zones. The city, however, in assessing local conditions involving community aesthetic considerations, may place specific usage restrictions as it determines to be appropriate, or, as the model suggests regarding video usage, make certain operational usage features of EMC signs within its jurisdiction are subject to special exception. | |
The prohibition on EMC video display is intended to cover the display of videos, films, motion video clips, and streaming video images that are not a part of the standard EMC software. It is not intended to prohibit the use of standard effects that are a part of the EMC software capabilities, which sometimes can be confused with actual video. These permitted effects are generally shown in the background of a message (flag waving, leaves falling, clouds passing) and are not the primary EMC content or message, but merely a design element intended to complement the primary communication. Each city may make a determination in regard to zones where EMC video | |
capabilities enhance the character of the zone, and where they may be prohibited, based on local conditions. | |
Clarification notes: The intent of these sign illumination provisions is to set a clear and uniform lighting level for illuminated on-premises signs at night based upon research, the needs of the motorist, and traffic safety. This lighting level standard is simple and easy to understand. Experience has shown that outdoor lighting and illumination regulations can often become very complicated and use concepts and terms that even professionals do not fully understand. The goal of this model code is to help create enforceable standards that require a minimum of administrative resources, yet can be applied uniformly. |
The lighting standard provided controls the actual brightness of the sign, or luminance of the sign -of the sign face, the sign letters, the sign panel etc. This standard is based on existing on-premises sign research. The correct lighting level at night for an on-premises sign has been confirmed, both in a test track setting and in real world environments. The maximum luminance level noted by the model will insure that signs have sufficient brightness at night so that they can be detected and read by motorists at night in the interests of traffic safety. |
The luminance standard also provides flexibility to both manufacturers and cities. The luminance of a sign can be determined at the place of manufacture prior to installation or in the field after the sign is installed. If multiple signs of the same design and manufacture are installed, then only one (1) sign needs to be measured as the representative sample, thereby conserving resources. |
This model code strongly recommends that other light measurement methods be avoided in regard to on-premises signs (for instance, an illuminance standard, or including ambient lighting conditions as a part of a complicated formula), because these methods do not account for true sign brightness which, in regard to traffic safety, is the primary determinant as to whether a sign is visible and legible to the motorist. |
It should also be noted that research has shown that on-premises signs are not a factor in creating so-called light trespass or light spillage conditions. Regulators often confuse the fact that an on-premises sign can be seen from a distance at night with light trespass. |
Instead, on-premises signs can be detected from a distance because they have proper sign brightness or luminance at night, and not because they project a great deal of unnecessary lighting to surrounding areas. This model code suggests that a light trespass measurement method, aimed at sign illuminance, may result in a more confusing and complicated regulatory scheme and may compromise public safety. |
Clarification notes: Sign manufacturers may not pre-assign labels before manufacture. Labels are serialized and would require the municipality to call the listing company and verify it with the NRTL. If the manufacturer's NRTL is on file, the municipality can generally access the most current information on-line, or require follow-up from the sign manufacturer. The primary purpose of this section is to insure that sign manufacturers build, list and label their electrical signs to comply with national electrical and fire safety codes in the interest of public safety. |
Clarification notes: Some state and local jurisdictions have interpreted certain language in the International Code Council's International Building Code (IBC) in regard to construction documents and construction permit applications to require so-called "sealed" sign designs or plans as a part of the routine sign permit application process. This reading is not entirely accurate, and has caused confusion and inefficiencies, without increasing public safety or increasing the quality of sign construction. |
In general, enforcement of local building code regulations and sign code electrical regulations will insure that standard on-premises signs are properly installed and that public safety is protected. Requirement of a sealed plan for a simple wall sign or low mounted monument sign or for types of sign projects that are repetitively installed using the same installation system does not add to the value of the sign nor change how the signs will be mounted nor automatically increase public safety. The sign installer is generally the expert in these areas, and will install the sign in the appropriate manner based on already established methods and industry accepted procedures. |
There will be sign projects, however, that are of such size and scope that cities may want to require the services of a licensed engineer in order to confirm that the sign installation details are correct for site and geographic conditions. |
The criteria to determine when sealed plans are required will vary from locality to locality, and the city therefore will create its own set of rules for engineering requirements. The intent of this section on engineering standards is to create a mechanism to determine when sealed sign plans are required and when they are not. The requirement for sealed plans will be triggered when the sign project achieves such scope as determined by the city that the services of an engineer or architect will insure the city that proper engineering principles are being applied. |
Clarification notes: This model code includes a listing of supplementary sections, intended as a general reference, that appear in most sign codes. These regulations are procedural in nature. Most cities include these provisions, and they should be crafted to local standards and in accordance with state law in the applicable jurisdiction. They are included here as a convenience to the local city. |
Other Requirements
Clarification notes: In order to be constitutionally sound, a code should keep the list of "exempted" signs to an absolute minimum if the exemptions are based on: |
- differentiating between uses and/or who is speaking, as this would represent a control of content based on the status of the "speaker"; |
- or if there can be some perceived discrimination between certain types of signs that are exempt from the code, and others that fall within the parameters of the code. A properly drafted sign code will avoid, as often as possible, making distinctions between uses and/or speakers. |
Clarification notes: This model code recommends that cities include language that makes "prohibited" signs general in nature; all municipalities have different regulatory and community needs in regard to available signs types. "Regulation" over "prohibition" is always preferred, from a legal and constitutional perspective. This commentary to the USSC Model Sign Code merely suggests that the above noted sign types are often included by cities in their sign code "prohibitions" section. |
FIGURE A |
Clarification notes: The intent of this section is to describe how freestanding sign height is determined: by measuring from the grade level directly beneath the freestanding sign to the top of the sign. An exception is included in order to assist adopting jurisdictions in conserving resources and to avoid unnecessary zoning appeals, as illustrated below [in subsection (b) above]. |
If a freestanding sign is installed along a roadway that is elevated as compared to grade level around the freestanding sign, then there is the potential that the freestanding sign will sit too low as compared to motorists on the roadway, and sign visibility and legibility will be compromised. The exception is a reasonable adjustment to address this type of situation administratively via the routine sign permit application, and will allow jurisdictions to avoid the bureaucratic time and expense involved in hearing zoning appeals filed to address the height disparity. |
Clarification notes: It is the intent of this model code to give a specific overall sign area allowance to a residential property, and no more. It is then up to the individual property owner how the overall sign area is apportioned. This relieves the city from the responsibility of making differentiations and distinctions between types of signs and speech on residential properties and its attendant constitutional implications. The model code recommends a maximum area of eight (8) square feet as a reasonable allowance that will meet most residential sign needs -particularly if there is more than one sign involved, if even on a temporary basis (for instance, a political sign and a contractor's sign). |
TABLE 1. SIGNS IN RESIDENTIAL DISTRICTS | ||||
|---|---|---|---|---|
Types of Signs Allowed | Number of Signs Allowed | Permitted Sign Area | Maximum (if applicable) | |
Residential properties including single-family detached, townhomes | Freestanding or wall | Any number so long as the total SF of all signs does not exceed 8 SF per frontage | 8 SF | 6' 0" |
Residential subdivisions, apartment complexes, multifamily dwellings, condominiums | Freestanding | One per frontage | 64 SF | 15' 0" |
Wall | One per facade | 5% of facade | – | |
Incidental or directional | Unlimited 6 SF | 8'-0" | ||
Permitted nonresidential uses in residential zones | Freestanding | One per frontage | 48 SF | 15' 0" |
Wall | One per facade | 5% of facade | – | |
Incidental or directional | Unlimited | 6 SF | 8' 0" | |
Electronic message centers are allowed by special exception on properties where permitted nonresidential uses in a residential zone are located | ||||
Freestanding signs in commercial and industrial districts values indicated are maximum limits on sign size and height. |
A = Sign area in square feet; H = Sign height in lineal feet |
TABLE 2 Zoning District | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Speed Limit | Downtown | Neighborhood Commercial | Highway Commercial | Industrial | Limited Access Highway | |||||
A | H | A | H | A | H | A | H | A | H | |
25 | 24 | 14 | 50 | 22 | 78 | 26 | 78 | 26 | ||
30 | 28 | 16 | 72 | 26 | 112 | 30 | 112 | 30 | ||
35 | 32 | 18 | 98 | 30 | 153 | 36 | 153 | 36 | ||
40 | 128 | 34 | 200 | 42 | 200 | 42 | ||||
45 | 162 | 38 | 253 | 48 | 253 | 48 | ||||
50 | 200 | 42 | 312 | 52 | 312 | 54 | ||||
55 | 378 | 56 | 378 | 60 | 457 | 66 | ||||
60 | 450 | 60 | 450 | 66 | 544 | 70 | ||||
65 | 639 | 74 | ||||||||
70 | 741 | 78 | ||||||||
75 | 850 | 86 | ||||||||
TABLE 3. PARALLEL SIGNS | |
|---|---|
Distance of Sign from Road or Adjacent Commercial or Industrial Zone | Percentage of Building Elevation Facade Permitted for Sign Area |
0 to 100 feet | Fifteen (15%) |
101 to 300 feet | Twenty (20%) |
Over 301 feet | Twenty-five (25%) |
Clarification notes: Tables #2 and #3 above are included in order to provide the local city with specific dimensional values for sign area, sign size and sign height, all based on existing scientific research related to on-premises signs. The intent of this code is to provide guidelines for the regulation of on-premises sign dimensions that are based on scientific principles, and thereby assist the local city in crafting a sign code that is fact-based, and to eliminate subjective or individual preferences, which can vary greatly. |
These standards are objective in nature. They have their basis in furthering the interests of traffic safety. They will insure that on-premises signs in the commercial and industrial zones have adequate visibility and legibility for motorists, again in the interests of public safety. |
The primary goal of these standards is to insure that all on-premises signs have sufficient area and height to provide a motorist with adequate time and travel distance to detect a sign, read and understand its contents, and then execute an appropriate driving maneuver. Factors that would impede this process (making the sign smaller, lowering its height) would be at odds with traffic safety principles, and should be avoided by a local city, assuming that the goal of public and motorist safety is paramount. |
Clarification notes: Canopy signs, marquee signs and signs on architectural projections are special sign applications. Although they are unique, they should be provided for in comprehensive sign code. An example of a canopy sign would be lettering installed on a canopy over a series of gas pumps at a service station -it is neither a true wall sign nor freestanding sign. An example of a marquee sign would be lettering and graphics displayed on the front and sides of a theater marquee that projects out over a portion of a downtown sidewalk. An example of a sign on an architectural projection would be letters installed on a decorative masonry feature that projects off a building face. |
Clarification notes: The above exceptions for projecting signs, awnings and marquees and A-frame signs are included for municipalities where an area of special interest or a central town district has been created with features such as sidewalks, buildings located close to the street or roadway, no front lawns or landscaped areas, substantial pedestrian traffic in addition to vehicular traffic. |
Clarification notes: | |
1. | Electronic message center control and code enforcement issues have become a matter of great interest at the municipal level across the United States. This interest has been spurred primarily by the availability of EMC technology, its increasing quality, and the interest of sign owners/end users in utilizing the technology. |
2. | Most EMC signs installed today are illuminated via LEDs, or light emitting diodes. LEDs are the current industry standard for the illumination of EMC signs, and it is likely that this will remain so for the near future, until another technology is perfected that is both tolerant to outdoor environmental conditions, sufficiently bright, and cost effective. There may be other sources of illumination in the near future, so the term EMC is intended to refer to any on-premises sign that can display messages and change them at regular intervals via a computer-controlled interface. |
3. | From a legal and practical standpoint, experience indicates that local control of EMC signs is preferred over an outright ban. Some communities have attempted to implement a prohibition on EMC signs, but it should be noted that there has been a heavy cost associated with these types of bans -legal and administrative costs to the city to defend such a ban; acrimony created within the community by the denial of this new communication technology without a scientific or traffic safety research basis; loss of the benefits created by enhanced EMC communication. In addition, a substantial percentage of EMC signs are installed at churches, municipal buildings, libraries, fire and rescue facilities, hospitals and outpatient medical offices. Therefore, a more prudent and balanced approach to EMC regulation based on sound scientific principles may serve the local AHJ in both the long and short terms. |
4. | In regard to traffic safety issues and EMC signs, a local city can rely on this statement to be true: up to this time, research has shown no correlation between EMC signs and traffic accidents, and EMC signs have not been found to be a distraction having impact on the driving task or to cause unsafe driving behavior that causes an accident in driver distraction studies. Some have offered opinions and theories about EMC signs and so called distractions, but there has been no direct scientific research on these distractions and EMC signs. The term "distraction" in and of itself is a pejorative term, suggesting a negative outcome or result. What research on motorist behavior has shown is that drivers engage in a wide variety of activities while operating a motor vehicle, and some for two (2) seconds or longer. Some activities that drivers engage in have a positive effect on motorist performance, even though the driver's eyes are away from the road. Examples of this would be checking the rear view mirror, checking the side mirrors, or checking the speedometer. Other activities that drivers engage in have a demonstrated negative effect on motorist performance -most notably cell phone use and texting while driving. Finally, other activities appear to have no effect either way -positive or negative -on driver performance, and EMC signs fall into this category. Drivers look at EMC signs but their driving performance is not affected, and that is why accident and driver distraction research fails to show any correlation with EMC signs. |
5. | All stakeholders agree that EMC lighting levels must be adjusted at night. In order for an EMC to be visible and legible during the day, the EMC sign must be energized or illuminated -it must have sufficient brightness to be seen while the sun is present. At night, however, EMC brightness must be adjusted to a much lower level, so that the sign is not over-bright and/or create glare so that a motorist cannot read the sign. Most EMC manufacturers have technology built into their products to accomplish this lighting level adjustment, typically using photocells and/or software timing controls. Section 9.03.270 coordinates with the general lighting standards of this code contained in section 9.03.271 (Sign illumination standard)s to insure that all EMCs have an appropriate lighting level at night, based on the needs of the motorist and traffic safety. This standard is a "luminance" standard, or an objective measurement and control of the actual brightness of the EMC sign, based on on-premises sign research. |
6. | Section 9.03.270 provides regulations for "display time" on an EMC sign. Display time is sometimes also referred to as a "change rate," and is intended to describe the rate at which a message can be changed on the EMC display panel. |
7. | EMC signs are capable of a wide range of dynamic message and image presentations as well as visual effects including simple scrolling or moving message effects to full video display. Since no negative correlation between on-premises EMC signs and traffic safety has been demonstrated by current research, any restriction on the various operational capabilities of EMC signs are necessarily imposed for aesthetic purposes only. In placing operational restrictions on EMC sign use in residential and professional zones as an aesthetic consideration, this model accepts the premises that these zones are not normally commercially active, and do not require the more visually dynamic forms of on premises communication necessary for the rapid transfer of commercial speech in commercial and/or industrial zones. |
Since neither an aesthetic nor traffic safety justification can be advanced for placing similar restrictions on the dynamic operational capabilities of EMC signs in commercial and/or industrial zones, the model -except for prohibition of flashing and provision that video display be subject to special exception -places no specific prohibitions on EMC operational usage in those zones. The city, however, in assessing local conditions involving community aesthetic considerations, may place specific usage restrictions as it determines to be appropriate, or, as the model suggests regarding video usage, make certain operational usage features of EMC signs within its jurisdiction are subject to special exception. | |
The prohibition on EMC video display is intended to cover the display of videos, films, motion video clips, and streaming video images that are not a part of the standard EMC software. It is not intended to prohibit the use of standard effects that are a part of the EMC software capabilities, which sometimes can be confused with actual video. These permitted effects are generally shown in the background of a message (flag waving, leaves falling, clouds passing) and are not the primary EMC content or message, but merely a design element intended to complement the primary communication. Each city may make a determination in regard to zones where EMC video | |
capabilities enhance the character of the zone, and where they may be prohibited, based on local conditions. | |
Clarification notes: The intent of these sign illumination provisions is to set a clear and uniform lighting level for illuminated on-premises signs at night based upon research, the needs of the motorist, and traffic safety. This lighting level standard is simple and easy to understand. Experience has shown that outdoor lighting and illumination regulations can often become very complicated and use concepts and terms that even professionals do not fully understand. The goal of this model code is to help create enforceable standards that require a minimum of administrative resources, yet can be applied uniformly. |
The lighting standard provided controls the actual brightness of the sign, or luminance of the sign -of the sign face, the sign letters, the sign panel etc. This standard is based on existing on-premises sign research. The correct lighting level at night for an on-premises sign has been confirmed, both in a test track setting and in real world environments. The maximum luminance level noted by the model will insure that signs have sufficient brightness at night so that they can be detected and read by motorists at night in the interests of traffic safety. |
The luminance standard also provides flexibility to both manufacturers and cities. The luminance of a sign can be determined at the place of manufacture prior to installation or in the field after the sign is installed. If multiple signs of the same design and manufacture are installed, then only one (1) sign needs to be measured as the representative sample, thereby conserving resources. |
This model code strongly recommends that other light measurement methods be avoided in regard to on-premises signs (for instance, an illuminance standard, or including ambient lighting conditions as a part of a complicated formula), because these methods do not account for true sign brightness which, in regard to traffic safety, is the primary determinant as to whether a sign is visible and legible to the motorist. |
It should also be noted that research has shown that on-premises signs are not a factor in creating so-called light trespass or light spillage conditions. Regulators often confuse the fact that an on-premises sign can be seen from a distance at night with light trespass. |
Instead, on-premises signs can be detected from a distance because they have proper sign brightness or luminance at night, and not because they project a great deal of unnecessary lighting to surrounding areas. This model code suggests that a light trespass measurement method, aimed at sign illuminance, may result in a more confusing and complicated regulatory scheme and may compromise public safety. |
Clarification notes: Sign manufacturers may not pre-assign labels before manufacture. Labels are serialized and would require the municipality to call the listing company and verify it with the NRTL. If the manufacturer's NRTL is on file, the municipality can generally access the most current information on-line, or require follow-up from the sign manufacturer. The primary purpose of this section is to insure that sign manufacturers build, list and label their electrical signs to comply with national electrical and fire safety codes in the interest of public safety. |
Clarification notes: Some state and local jurisdictions have interpreted certain language in the International Code Council's International Building Code (IBC) in regard to construction documents and construction permit applications to require so-called "sealed" sign designs or plans as a part of the routine sign permit application process. This reading is not entirely accurate, and has caused confusion and inefficiencies, without increasing public safety or increasing the quality of sign construction. |
In general, enforcement of local building code regulations and sign code electrical regulations will insure that standard on-premises signs are properly installed and that public safety is protected. Requirement of a sealed plan for a simple wall sign or low mounted monument sign or for types of sign projects that are repetitively installed using the same installation system does not add to the value of the sign nor change how the signs will be mounted nor automatically increase public safety. The sign installer is generally the expert in these areas, and will install the sign in the appropriate manner based on already established methods and industry accepted procedures. |
There will be sign projects, however, that are of such size and scope that cities may want to require the services of a licensed engineer in order to confirm that the sign installation details are correct for site and geographic conditions. |
The criteria to determine when sealed plans are required will vary from locality to locality, and the city therefore will create its own set of rules for engineering requirements. The intent of this section on engineering standards is to create a mechanism to determine when sealed sign plans are required and when they are not. The requirement for sealed plans will be triggered when the sign project achieves such scope as determined by the city that the services of an engineer or architect will insure the city that proper engineering principles are being applied. |
Clarification notes: This model code includes a listing of supplementary sections, intended as a general reference, that appear in most sign codes. These regulations are procedural in nature. Most cities include these provisions, and they should be crafted to local standards and in accordance with state law in the applicable jurisdiction. They are included here as a convenience to the local city. |