Prohibition Signs – Clear Safety Messaging to Prevent Unsafe Actions
Prohibition signs are essential safety signs used to clearly indicate actions that are not permitted in a specific area. Designed for instant recognition, these signs use universal symbols to communicate restrictions quickly and effectively regardless of language or literacy level.
Commonly recognised by their red circular design with a diagonal slash, prohibition signs play a critical role in preventing accidents, protecting people, and ensuring compliance with workplace safety regulations.
What Are Prohibition Signs?
Prohibition signs visually communicate “Do Not” instructions, helping to eliminate unsafe behaviors before they lead to incidents. These signs are widely used across industries to reinforce safety policies and legal requirements.
Typical examples include:
- No Smoking
- No Entry
- No Mobile Phones
- No Parking
- Do Not Operate
By displaying clear and highly visible symbols, prohibition signs reduce reliance on text-based instructions and improve safety awareness in any environment.
Australian Standard for Prohibition Signs (AS 1319-1994)
In Australia, prohibition signs must comply with AS 1319-1994 – Safety Signs for the Occupational Environment, ensuring consistency and recognisability nationwide.
Key Design Features:
- Colour: Red circle with a diagonal slash over a black symbol on a white background
- Shape: Circular
- Symbol: Black pictogram representing the prohibited action
- Meaning: Indicates an action that is strictly forbidden
These standardised elements ensure that prohibition signs are immediately understood, helping businesses meet compliance requirements and maintain a safe workplace.
Where Are Prohibition Signs Used?
Prohibition signs are widely used across various environments where safety rules must be clearly enforced, including:
- Workplaces and factories
- Construction sites
- Warehouses and logistics facilities
- Public areas and commercial buildings
- Car parks and restricted zones
- Hospitals, schools, and offices
They are particularly important in high-risk environments where preventing unsafe behavior is critical.
Why Prohibition Signs Are Important
Implementing proper prohibition signage helps to:
- Improve workplace safety and reduce accidents
- Ensure compliance with Australian safety regulations
- Communicate rules clearly and instantly
- Minimise liability and risk
- Create a safer environment for employees, visitors, and the public
Clear signage is one of the simplest and most effective ways to enforce safety rules without constant supervision.
High-Quality Prohibition Signs for Every Application
At K2K Signs, we offer a wide range of durable, compliant, and high-visibility prohibition signs suitable for indoor and outdoor use. Our signs are manufactured using premium materials to ensure long-lasting performance in Australian conditions.
We also provide:
- Custom prohibition signs
- Reflective options for low-light areas
- Multiple sizes and materials
- Fast turnaround and Australia-wide delivery
Order Prohibition Signs Online
Browse our range of prohibition signs and ensure your workplace or site meets safety compliance standards. Whether you need standard designs or custom signage, we’ve got you covered.

