
Site Traffic Hazard Sign
C78820/1mm/A4/NO FIX
Pairs well with
Ensure the security of your construction site by obtaining our Site Traffic caution sign today. Our assortment of health and safety signs is specifically crafted for UK construction and building sites, and this sign is crucial for reducing the risk of accidents involving vehicles and pedestrians.
The Health and Safety Executive (HSE) highlights that seven workers lose their lives every year on construction sites due to incidents with moving vehicles, including mobile plant. Don't allow your site to become a part of this statistic. Take proactive measures to prevent accidents and safeguard the well-being of your workforce.
Our Warning Site Traffic Sign is just one instance of our proficiency in safety signage. We also provide various banners and personalized signage to cater to your requirements. Our dedicated team of industry professionals is available to assist you with any queries or concerns and ensure that you obtain the appropriate signage for your site.
At the The Safety Sheep Store, we are recognised for our dedication to environmental sustainability. Our signage is produced from recyclable materials, aligning with our objective to reduce waste and promote a greener future. As a proud British company, all our signs are manufactured in Yorkshire, ensuring the highest quality and helping local industry.
Make a purchase online with us today, or stop by our headquarters to pick up your signage. Join the many contented customers who have selected the The Safety Sheep Store as their preferred provider of safety signage. Don't delay - let's work together to make your construction site a safer place for everyone, starting now.

Site Traffic Hazard Sign
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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We aim to dispatch your order within one working day
For more information on delivery rates and times click here
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Customer Support
For help with ordering, sales enquiries or general customer service, call us on 0345 5480 777 or email sales@safetysheep.co.uk
Product details
UK Health & Safety Regulations
The Health and Safety at Work Act (HSWA) 1974 is a foundational law in the UK for workplace health and safety. It outlines the general duties of various parties to ensure a safe work environment. Here's a quick summary: Duty of Employers: Employers must provide a safe workplace, ensure the health, safety and welfare of their employees and anyone else on the premises (visitors, contractors etc.). This includes providing adequate training, information, and supervision. Employee Duties: Employees have a duty to take care of their own health and safety and that of others around them. This includes following safety procedures and using equipment properly. Other Duties: The Act also places duties on those responsible for premises, manufacturers of equipment used at work, and the self-employed. Safety signage is one way employers can fulfill their duty to inform and instruct employees. Signs can warn of hazards, provide instructions for safe use of equipment, and delineate emergency exits. While HSWA outlines general principles, specific regulations and Approved Codes of Practice (ACOPs) provide more detailed guidance on workplace health and safety practices. For up-to-date information, you can refer to the Health and Safety Executive (HSE) website https://www.gov.uk/health-and-safety-executive.
Safety Signs Size Guide
Your Safety Signs Size Conversion Guide
Need to convert millimetres to feet and inches for your signage? Our comprehensive guide provides accurate measurements in both metric and imperial units, helping you find the perfect size for your sign.
300 x 100 mm - 12" x 4"
200 x 150 mm - 8" x 6"
A4 (297 x 210 mm) - 12" x 8"
400 x 150 mm - 16" x 6"
400 x 300 mm - 16" x 12"
A2 (594 x 420 mm) - 24" x 17"
600 x 200 mm - 24" x 8"
800 x 600 mm - 32" x 24"
Sizes in inches (") are approximate
Sign Materials Guide
Choosing the right material for your safety signs is crucial for ensuring their effectiveness and durability. We proudly manufacture all our signs in Britain. Let us guide you in selecting the most suitable material for your signs.
Self-adhesive stickers
Self-adhesive stickers are ideal for indoor usage. We use superior-quality Metamark digital vinyl, which is a durable and flexible material with an adhesive backing. Prior to applying the sticker, ensure that the surface is flat, smooth, and clean. While the vinyl is waterproof, we do not recommend outdoor usage unless the surface is deemed appropriate. It is important to note that vinyl stickers do not stick to wood, rendered, wood chip, brick or stone walls, concrete, or similar surfaces. In such cases, we suggest considering alternative materials such as recycled plastic or composite aluminium. Please be aware that Self-adhesive stickers, such as Dulux Easycare Matt Emulsion paint, will not adhere to newly formulated washable, "wipe clean" painted surfaces. If you have any uncertainties or inquiries, feel free to ask us. Additionally, we advise against attempting to independently apply Self-adhesive stickers larger than A4 size, as it may be more challenging than anticipated.
Recyclable Plastic
Introducing Polyline Bubble Board, the latest innovation in the sign industry, made from 100% recyclable polypropylene. Manufactured in the EU by Pyramid, this eco-friendly material offers an impressive strength-to-weight ratio, with a smooth, flute-free surface—unlike Correx.
The Bubble Board features a fire-retardant (FR) black core, making it an ideal choice for projects that require enhanced safety measures. Suitable for both indoor and outdoor use, it is UV-treated for excellent weather resistance, and its scratch-resistant surface outperforms traditional Foamex. Fully recyclable through the No.5 waste stream, Bubble Board is a sustainable and reliable option for UK safety signage.
Rigid Plastic
Rigid Plastic Signs are commonly used for safety signs due to their durability and lightweight design. Our Plastic 1mm option is lightweight and durable, providing waterproof qualities. It is suitable for both indoor and outdoor use. Fixing holes can be drilled in the plastic at no additional cost.
We take pride in being the inaugural online sign manufacturer in the UK to present our complete product line of health and safety signs and general signage in 50% recycled plastic. Our new 3mm waterproof recycled plastic, which is bright white in colour, is suitable for both indoor and outdoor use and is more eco-friendly compared to traditional rigid plastic. It possesses the same surface qualities as rigid and foamed plastic but incorporates a lighter recycled foam PVC centre. Furthermore, this material is 100% recyclable and offers an exceptional printing surface for various signage applications. You have the option to drill fixing holes or use foam adhesive pads on the back for mounting the signs.
Aluminium Composite
Our Metal Signs, constructed from Aluminium Composite (Dibond Signs), are specifically crafted for outdoor usage. The aluminium composite consists of a non-aluminium core bonded between two thin sheets, resulting in a sturdy and weather-resistant sign. We utilize 3mm thick composite aluminium, sourced from ALUPANEL in Britain. This material is produced from at least 80% recycled materials and is completely recyclable. It can be easily drilled to install holes, and we provide pre-drilled holes upon request at no extra cost. Dibond signs are well-known for their durability and long lifespan, making them a fantastic option for outdoor signage.
Foamex
Foamed Plastic Signs, or Foamex, are a popular choice for temporary construction site safety boards. This material is durable yet lightweight, weatherproof, and specifically designed for outdoor signage. Our foamex is 3mm thick and has a white matte finish.
Correx
Fluted Polypropylene, also known as Correx, is designed for temporary signage, especially in the construction industry. It offers a cost-effective and lightweight solution for short-term signage needs.
Banners
Here are the details about our banner options:
Standard and Premium Banner Materials
We offer a standard 440gsm PVC Banner, which is lightweight, weather-resistant, flame-resistant, and has a gloss finish. It is suitable for indoor and short-term outdoor use.
- Our Premium 510gsm Extra-Strong PVC Banner is designed for higher tear resistance and durability. It is weather-resistant, suitable for indoor and long-term outdoor use, and meets UK and European fire safety standards. It has a satin finish.
Mesh Banner Material
- The 260gsm MESH Banner is perfect for windy areas, as its perforated design allows wind and some light to pass through, preventing ripping.
All our banners are printed with high-quality, eco-friendly UV inks. They are hemmed and eyelet for easy fixing, and cable ties are provided at no extra charge.
If you have any further questions or need assistance, please feel free to contact us.
FAQs
Here's some of your frequently asked questions...
When is it legally required to display caution or warning signs?
Under the Health and Safety (Safety Signs and Signals) Regulations 1996, employers must provide safety signs where there is a significant risk that cannot be avoided or controlled by other means. Warning signs must be displayed in workplaces, construction sites, and public areas where hazards are present.
What is the difference between caution and warning signs?
Caution signs (often yellow with a black triangle) are used to indicate a low to moderate risk that requires attention.
Warning signs highlight higher-risk hazards that could cause serious injury or death if not addressed.
What are the legal requirements for hazard sign design?
Hazard signs must comply with BS EN ISO 7010 to ensure consistency across the UK and Europe. The sign should be:
A yellow background with a black border and symbol inside a triangle.
Clearly visible and positioned at an appropriate height.
Do all businesses need to display caution or warning signs?
No, businesses are only required to display hazard signs where a risk assessment identifies a significant hazard that cannot be eliminated. If there is no significant risk, signs may not be necessary.
Who is responsible for ensuring hazard signs are displayed correctly?
Employers, business owners, and duty holders are responsible for displaying the correct safety signage under The Health and Safety at Work etc. Act 1974. Failing to do so can result in enforcement action by the HSE.