Safety signs are an important part of workplace risk control, but simply installing a sign does not necessarily mean that it is providing effective safety information.
A safety sign needs to be appropriate to the hazard, positioned where it can be seen, large enough to be understood at the required viewing distance, adequately illuminated and maintained in good condition. Its location should also take account of how people move through the workplace and where safety information needs to be seen or acted upon.
In the UK, BS 5499 provides important guidance on the selection, installation, positioning and maintenance of safety signs. In particular, BS 5499-10:2014+A1:2023 covers the selection and use of safety signs and fire safety notices, excluding escape-route signs, while BS 5499-4:2013 specifically covers escape-route signing.
This guide explains the key principles of safety sign placement and installation, how BS 5499-4 and BS 5499-10 fit together, and the practical factors that should be considered when installing safety signage in workplaces, commercial premises, industrial buildings and other non-domestic environments.
Important: This article provides general guidance and should not be treated as a substitute for a competent risk assessment, the relevant legislation, or the full text of the applicable British Standards. Where there is uncertainty about the correct signage arrangement for a premises, appropriate professional advice should be obtained.
What Does BS 5499 Say About Safety Sign Placement?
BS 5499 is a family of British Standards concerned with safety signs and their application. For practical workplace signage, two standards are particularly relevant.
BS 5499-10:2014+A1:2023 provides guidance on how to select, install, position and maintain safety signs conforming to BS ISO 3864-1 and BS EN ISO 7010, together with fire safety notices. It applies generally to premises other than private domestic premises and is intended for people responsible for selecting, installing and inspecting safety signs, including building owners, facilities managers and safety managers.
BS 5499-4:2013 deals specifically with escape-route signing. It covers the selection of appropriate escape-route signs, their location and mounting positions, lighting and maintenance, and recommends the use of escape-route signs conforming to BS EN ISO 7010.
This distinction is important because the correct position for a warning sign beside a machine is not necessarily determined in the same way as the positioning of an emergency exit sign along an escape route.
At a fundamental level, safety signage should be installed so that the intended information is available where and when it is needed.
The Health and Safety Executive’s guidance on the Health and Safety (Safety Signs and Signals) Regulations 1996 states that signboards should, in principle, be installed at a suitable height and in a position appropriate to the line of sight, taking account of obstacles. Depending on the circumstances, this may mean positioning a sign at the access point to an area presenting a general hazard, or in the immediate vicinity of a particular hazard or object.
This means that there is no sensible universal rule that every safety sign should simply be mounted at a particular height or distance from the hazard. The correct position depends on the purpose of the sign, the environment, viewing conditions and how the information needs to be used.
How Should Safety Signs Be Positioned?
The most important principle when installing a safety sign is visibility from the intended viewing position.
A sign can be technically correct and still be ineffective if it is hidden behind equipment, mounted where people do not naturally look, obscured by a door, positioned around a corner without suitable directional information, or installed at a size that cannot be read from the required distance.
Before fixing a sign to a wall, door, column or other surface, consider the following.
Consider the line of sight
A person should be able to see the sign without having to deliberately search for it.
This is particularly important where the sign communicates an immediate hazard, mandatory behaviour, prohibition or emergency information.
Consider the normal position from which someone will approach the sign and whether their view could be affected by:
- shelving and storage
- machinery and plant
- structural columns
- doors and partitions
- vehicles
- temporary equipment
- stock and materials
- other signs
- advertising or promotional displays
- changes in floor level
- poor lighting
The HSE guidance specifically identifies obstacles and line of sight as factors when determining the appropriate location of a signboard.
Position signs close enough to the relevant hazard
Where a sign identifies a specific hazard or provides a specific instruction, it should normally be positioned where the information has the greatest practical relevance.
For example, a warning sign relating to an electrical hazard may need to be positioned at or immediately around the relevant equipment or access point, whereas a general hazard affecting an entire room or area may be better communicated at the entrance.
This prevents a common mistake: installing a sign somewhere that is technically within the building but too far removed from the situation it is intended to identify.
Position signs at access points where appropriate
Some hazards affect everyone entering a particular room, area or zone.
In these situations, signage at the entrance or access point can provide information before a person enters the hazard area.
This is particularly useful for signage concerning:
- mandatory personal protective equipment
- restricted access
- hazardous areas
- chemical storage
- electrical rooms
- machinery areas
- controlled workplaces
The 1996 Regulations similarly recognise the use of signs at access points for general hazards and in the immediate vicinity of specific hazards or objects.
Avoid creating visual clutter
More signage is not automatically better.
The HSE specifically warns against placing too many signboards close together because excessive signage can cause confusion and result in important information being overlooked.
A well-planned signage system should therefore communicate the necessary information clearly without creating an overwhelming collection of competing messages.
The objective should be:
the right sign, in the right location, visible at the right time.
How High Should a Safety Sign Be Installed?
There is no single mounting height that applies to every type of safety sign. The appropriate position depends on the purpose of the sign, the environment, the viewing distance and the position from which people need to see and interpret the information.
For escape-route signs, however, BS 5499-4:2013 provides specific recommendations for mounting height.
Where an escape-route sign is positioned above a doorway or in an open space, BS 5499-4 recommends that it is mounted between 2.0 m and 2.5 m above floor level, measured to the base of the sign, and positioned as close as practicable to the centre line of the escape route. This helps ensure that the sign can be seen over the heads of people using the route.
Where an escape-route sign is mounted on a wall, the recommended mounting height is between 1.7 m and 2.0 m above floor level, measured to the base of the sign, keeping the sign within the immediate field of vision.
BS 5499-4 also recognises that mounting heights above 2.5 m may be appropriate in large open spaces or for operational reasons. In these circumstances, the sign needs to remain conspicuous and identifiable, and a larger sign may therefore be necessary.
Where practicable, signs should be installed at a consistent height throughout the escape route. Consistency helps occupants anticipate where they will find the next sign as they move through the building.
For other workplace safety signs covered by BS 5499-10, the installation height should be assessed according to the circumstances rather than applying the escape-route dimensions automatically. Consider the intended viewing position, line of sight, the nature of the hazard, potential obstructions and the distance from which the sign needs to be recognised.
Safety Sign Size, Viewing Distance and Visibility
Sign size is directly related to visibility.
A safety sign needs to be large enough for its symbol, text and other information to be readily seen and understood from the intended viewing distance. The HSE states that the dimensions and visual characteristics of safety signboards must allow them to be easily seen and understood, and specifically points to BS 5499-4 and BS 5499-10 for guidance concerning application, size and siting.
This becomes particularly important when signage is being installed in larger areas such as:
- warehouses
- factories
- distribution centres
- production halls
- schools
- hospitals
- commercial buildings
- car parks
- large public areas
A small sign may be perfectly adequate beside a doorway but inappropriate when the same message must be understood from across a large room.
Viewing distance matters
When selecting a sign, consider the distance from which the information needs to be recognised.
This is particularly important for fire exit and escape-route signage.
An escape route can involve long corridors, open areas, staircases, junctions and changes of direction. People may need to identify the route before they reach the point where the next directional decision must be made.
BS 5499-4 specifically addresses the selection, location, mounting positions and lighting of escape-route signs.
The HSE also states that safety signs should be of a sufficient size and should remain clear and legible for their intended viewing distance.
Consider the sign’s contrast and surroundings
The environment surrounding a sign can significantly affect its effectiveness.
A safety sign should not blend into its background or be placed against a visually confusing area.
Take particular care where signs are installed near:
- patterned surfaces
- brightly coloured machinery
- heavily cluttered walls
- reflective surfaces
- glass
- illuminated displays
- large amounts of surrounding signage
The purpose of safety signage is communication. Installation should therefore support rapid recognition rather than simply satisfy an installation checklist.
Installing Escape Route and Fire Safety Signs Under BS 5499-4
Escape-route signage requires particular attention because it forms part of the way people are directed towards a place of safety during an emergency.
BS 5499-4:2013 provides recommendations for the selection and use of escape-route signs within buildings, including their location, mounting positions, lighting and maintenance. It covers high-mounted escape-route signing and recommends the use of appropriate signs conforming to BS EN ISO 7010.
Directional information
An escape route is not adequately identified simply because there is an exit sign somewhere at the end of the route.
Where a person has to make a decision about which direction to travel, the signage system should provide the necessary directional information.
This is particularly relevant at:
- corridor junctions
- changes of direction
- staircases
- entrances to escape routes
- lobbies
- intersections
- points where alternative routes may be possible
The use of arrows and supplementary information forms part of the guidance addressed by BS 5499-4.
A person unfamiliar with the building should be able to follow the signage logically without having to rely on local knowledge.
Don’t assume one sign is enough
Escape-route signage should be considered as a system, rather than a collection of individual signs.
For example, a route might require:
Initial directional sign → intermediate directional sign → further directional sign at a junction → exit identification
The precise arrangement depends on the building layout and risk assessment.
A sign positioned at the beginning of a corridor does little to help someone who reaches a junction further along that corridor and has no indication which direction to take.
Escape signs must remain visible during an emergency
Visibility does not only mean visibility under normal daytime conditions.
BS 5499-4 specifically includes lighting as part of escape-route-signing considerations.
The wider HSE guidance states that signs requiring power must have a guaranteed emergency supply in the event of a power failure unless the hazard has been eliminated, and that illuminated signs should be checked regularly to ensure they function correctly.
This is one reason why the choice between an externally illuminated sign, internally illuminated sign or suitable photoluminescent solution needs to be considered in relation to the building and its emergency arrangements.
It is also important not to confuse escape-route signage with low-mounted photoluminescent way-guidance systems; BS 5499-4 specifically notes that low-mounted way-guidance systems are outside its scope and directs users towards BS ISO 16069 for that subject.
Installation, Maintenance and Inspection of Safety Signs
Installing the correct sign in the correct location is only the beginning.
Safety signage needs to remain effective throughout the life of the installation.
BS 5499-10 covers not only selection, installation and positioning, but also maintenance of safety signs.
The HSE guidance similarly states that safety signs should be cleaned, maintained, checked, repaired and replaced where necessary so that they retain their functional and visual properties.
Check signs regularly
Inspections should consider whether the sign is:
- still required
- correctly positioned
- clearly visible
- adequately illuminated
- securely fixed
- legible
- clean
- undamaged
- unobscured
- appropriate to the current risk
This is particularly important in industrial environments where dust, dirt, chemicals, impact, sunlight and weather can gradually affect signage.
Make sure signs remain securely fixed
A safety sign should be securely attached to its mounting surface and suitable for the environment.
The choice of fixing method should therefore consider whether the sign is being installed:
- indoors
- outdoors
- on machinery
- on uneven surfaces
- in a damp environment
- in an area exposed to chemicals
- in a high-traffic area
- where mechanical impact is possible
The HSE requires signboards to be durable, securely fastened and properly maintained so that they remain visible and effective.
Remove obsolete signs
An often overlooked aspect of signage management is removing signs that are no longer relevant.
The HSE specifically advises that where circumstances change and a sign is no longer necessary, it should be removed so that misleading information is not displayed.
This is particularly important when:
- machinery is removed
- rooms are repurposed
- building layouts change
- access arrangements change
- hazards are eliminated
- fire escape routes are altered
- businesses move into or out of premises
Old signage can be just as problematic as missing signage if it gives people information that is no longer correct.
Review signage following workplace changes
Safety signage should form part of the wider risk-assessment process.
The introduction of new machinery, changes to pedestrian routes, alterations to fire exits, refurbishment, changes in occupancy or changes to hazardous substances can all create a need to review existing signage.
Signage should therefore be treated as an ongoing safety control, rather than a one-off installation exercise.
BS 5499-4 vs BS 5499-10: Which Standard Applies?
Understanding the difference between the two standards makes it much easier to determine which guidance is relevant.
| Standard | Primary purpose |
|---|---|
| BS 5499-4:2013 | Escape-route signing within buildings |
| BS 5499-10:2014+A1:2023 | Selection, installation, positioning and maintenance of safety signs and fire safety notices, excluding escape-route signs |
BS 5499-10:2014+A1:2023 specifically covers safety signs conforming to BS ISO 3864-1 and BS EN ISO 7010, while fire safety notices are addressed separately within the standard.
BS 5499-4:2013 focuses on escape-route signing and includes considerations such as sign selection, location, mounting position, lighting and maintenance.
It is therefore quite possible for both standards to be relevant within the same building.
For example, a factory could use:
- Warning signs around machinery and hazardous areas
- Mandatory signs identifying required PPE
- Prohibition signs controlling activities or access
- Fire safety signs identifying firefighting equipment
- First aid signs identifying first-aid facilities
- Escape-route signs directing people towards exits
The signage system should work as a coherent whole, while the specific requirements and guidance applicable to each type of sign are taken into account.
Is BS 5499 a Legal Requirement?
This is an important distinction.
BS 5499 itself is not legislation. British Standards generally provide recognised specifications, recommendations or codes of practice rather than creating criminal or civil legal duties simply because the standard exists.
However, that does not mean that BS 5499 is irrelevant to legal compliance.
The Health and Safety (Safety Signs and Signals) Regulations 1996 establish requirements for safety signs where risks remain after appropriate control measures have been implemented. HSE guidance states that safety signs should be clear and legible and used to identify warnings, prohibited actions, mandatory safeguards and directions towards emergency exits, firefighting equipment and first-aid facilities.
The HSE also specifically identifies BS 5499-4:2013 and BS 5499-10:2014 as sources of information concerning the application, size and siting of safety signs.
BSI states that BS 5499-10:2014+A1:2023 provides guidance intended to satisfy the requirements of both the Health and Safety (Safety Signs and Signals) Regulations 1996 and the Regulatory Reform (Fire Safety) Order 2005.
The practical takeaway is that businesses should not regard BS 5499 as a box-ticking exercise or assume that purchasing a sign automatically means that a legal obligation has been satisfied.
The correct approach is to identify the risks, determine what signage is necessary, select appropriate signs and install them so that they remain visible, understandable and effective.
Safety Sign Installation Checklist
Before considering a safety-sign installation complete, work through the following checklist.
Selection
- Is the correct type of safety sign being used?
- Does the pictogram communicate the intended message clearly?
- Is supplementary text necessary?
- Does the sign relate to the actual hazard or situation?
Position
- Can the sign be seen from the intended approach?
- Is it positioned appropriately in relation to the hazard?
- Could doors, machinery, shelving or stock obstruct it?
- Is it at a suitable height and orientation?
- Is it located where the information is actually needed?
Size
- Is the sign large enough for the intended viewing distance?
- Can the pictogram and any text be understood quickly?
- Is a larger sign required because of the size of the room or area?
Lighting
- Is the sign adequately visible under normal conditions?
- Will it remain visible when lighting conditions deteriorate?
- Does emergency lighting need to be considered?
- Is a photoluminescent or illuminated solution appropriate?
Installation
- Is the sign securely fixed?
- Is the mounting method appropriate for the environment?
- Is the material suitable for indoor or outdoor conditions?
- Could the sign be damaged, contaminated or obscured?
Maintenance
- Is the sign clean and legible?
- Is it still securely attached?
- Does it remain relevant?
- Has the workplace changed since the sign was installed?
- Have obsolete or misleading signs been removed?
For escape routes, also check that directional information remains continuous and logical along the route, particularly at junctions and changes of direction.
Frequently Asked Questions
What is BS 5499?
BS 5499 is a series of British Standards concerning safety signs and their application. Different parts cover different aspects of safety signage. BS 5499-10 provides guidance on selecting, installing, positioning and maintaining safety signs and fire safety notices, while BS 5499-4 deals specifically with escape-route signing.
What is BS 5499-4?
BS 5499-4:2013 is the code of practice for escape-route signing. It provides recommendations covering the selection and use of escape-route signs, including their location, mounting positions, lighting and maintenance.
What is BS 5499-10?
BS 5499-10:2014+A1:2023 provides guidance on the selection and use of safety signs and fire safety notices. It covers how relevant safety signs should be selected, installed, positioned and maintained, excluding escape-route signs.
How high should a safety sign be mounted?
No universal height for every sign. For escape-route signs, BS 5499-4 recommends 2.0–2.5 m above doors/open space and 1.7–2.0 m on walls, measured to the base of the sign. Other workplace signs should be judged from the viewing position.
How large should a safety sign be?
The required size depends on factors including the intended viewing distance and the environment in which the sign is installed. Signs need to be sufficiently large and visually clear to be easily seen and understood.
Where should warning signs be placed?
Warning signs should be positioned where people can see and understand the warning in sufficient time, taking account of the nature and location of the hazard. Depending on the situation, this may be at an access point or close to the specific hazard.
Where should fire exit and escape-route signs be installed?
Escape-route signage should form a logical system that provides sufficient directional information along the escape route, including where people need to make a decision about which direction to travel. BS 5499-4 covers the selection, location, mounting positions, lighting and maintenance of escape-route signs.
Do safety signs need to be illuminated?
Safety signs need to remain visible and effective in the conditions in which they are required. The HSE states that signs requiring power must have a guaranteed emergency supply in the event of a power cut unless the hazard has been eliminated, while BS 5499-4 specifically addresses lighting of escape-route signs.
Can I put lots of safety signs together?
Care should be taken not to create excessive visual clutter. HSE guidance warns that placing too many signs close together can cause confusion and result in important information being overlooked.
Do safety signs need to be maintained?
Yes. Safety signs should be checked and maintained so that they remain visible, legible, securely fixed and effective. Damaged, dirty or obsolete signs should be repaired, replaced or removed as appropriate.
Is BS 5499 legally mandatory?
BS 5499 itself is not legislation, but it provides recognised guidance for the selection and use of safety signs. The wider legal requirements come from legislation such as the Health and Safety (Safety Signs and Signals) Regulations 1996 and applicable fire-safety legislation. BSI states that BS 5499-10:2014+A1:2023 is intended to provide guidance satisfying the requirements of those legislative frameworks.
Sources & Further Reading
- BSI – BS 5499-4:2013 – Safety signs: Code of practice for escape route signing
https://knowledge.bsigroup.com/products/safety-signs-code-of-practice-for-escape-route-signing - BSI – BS 5499-10:2014+A1:2023 – Guidance for the selection and use of safety signs and fire safety notices
https://knowledge.bsigroup.com/products/guidance-for-the-selection-and-use-of-safety-signs-and-fire-safety-notices-1 - HSE – L64: Safety signs and signals – Guidance on Regulations
https://www.hse.gov.uk/pubns/books/l64.htm - UK Government – Health and Safety (Safety Signs and Signals) Regulations 1996
https://www.legislation.gov.uk/uksi/1996/341/made - BSI – BS EN ISO 7010:2020+A8:2024 – Graphical symbols, safety colours and safety signs
https://knowledge.bsigroup.com/products/graphical-symbols-safety-colours-and-safety-signs-registered-safety-signs-6
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Frustrated by the widespread use of substandard or ill-fitting safety solutions that put workers at risk, he established HSE Store to deliver practical, reliable equipment and expert guidance that genuinely protects people and raises safety standards. His deep operational expertise continues to shape every product, guide, and recommendation on the site.
