Make Custom DOT Hazard Placards with UN Numbers
Design custom DOT hazard placards online with Design ID Pro. Select a hazard class background and add your required UN identification number to create 10.75-inch custom DOT placards for trucks, trailers, and containers. Identify hazardous materials during transportation and support compliance with U.S. Department of Transportation (DOT) hazardous materials regulations.
Whether you're hauling flammable liquids, corrosives, gases, oxidizers, toxic materials, or other regulated hazardous substances, these custom hazmat placards show hazards fast for drivers, inspectors, emergency responders, and the public.
Create DOT-Compliant Hazard Placards for Trucks, Trailers and Containers
Build Your Custom Hazmat Placard in Four Simple Steps:
-
Select a material - 7 options
-
Select the hazard class placard background - 18 options
-
Enter the required four-digit UN number
-
Review and click Add To Cart – Easy!
Your custom DOT placard with UN numbers will be made for you with the selected options. You can email yourself a proof to save or share. Then save your placard design to your ComplianceSigns account for easy re-orders in the future.
Available DOT Hazard Classes
Choose from standard DOT compliant placard designs, including:
Class 2 – Gases
Class 3 – Flammable and Combustible Liquids
Class 4 – Flammable Solids, Spontaneously Combustible, Dangerous When Wet
Class 5 – Oxidizers and Organic Peroxides
Class 6 – Toxic and Poison Inhalation Hazards
Class 8 – Corrosive Materials
Class 9 – Miscellaneous Materials
These uniform colors and symbols are widely recognized across North America for transport hazard placards.
What Is a UN Number?
A UN number is a four-digit identification number assigned to hazardous materials and dangerous goods. These numbers help emergency responders, transportation personnel, and regulatory agencies quickly identify specific substances during shipping, storage, and incident response.
Examples include:
- 1203 – Gasoline
- 1090 – Acetone
- 1789 – Hydrochloric Acid
- 1993 – Flammable Liquids, N.O.S.
Adding the correct UN number to your placard helps ensure accurate hazard communication throughout the transportation process.
DOT Placard Size Requirements
DOT regulations require hazardous material placards to be displayed in a square-on-point (diamond) format with minimum dimensions of approximately 9.84 inches per side. Our custom hazardous material placards are produced at 10.75 x 10.75 in., a common industry size that meets DOT dimensional requirements for transportation placards. ([eCFR][1])
Common Applications
Custom DOT placards are commonly used on:
- Tank trucks
- Cargo trailers
- Freight containers
- Rail cars
- Bulk packaging
- Chemical transport vehicles
- Hazardous material storage and transfer equipment
Placards help identify hazardous cargo during transportation and emergency response situations. ([eCFR][2])
Why Order Custom DOT Placards?
- Fast online customization
- Accurate hazard class backgrounds
- Add the exact UN number you need
- Durable materials for transportation environments
- Clear, highly visible graphics
- Manufactured in the USA
Frequently Asked Questions
What size are these custom DOT placards?
All custom placards are 10.75 inches square and designed for transportation hazard identification applications.
Can I add any UN number?
You can enter the 4-digit UN identification number required for your hazardous material shipment. Always verify the correct number using applicable shipping documentation and DOT regulations.
What does a DOT placard do?
DOT hazmat truck placards communicate the hazard class of materials being transported. They help emergency responders, carriers, inspectors, and the public quickly recognize potential hazards.
Are UN numbers and NA numbers the same?
Many hazardous materials use UN numbers. Some materials without assigned UN numbers may use North American (NA) identification numbers that function similarly for transportation purposes.
How do I know which placard to choose?
Select the placard that matches the hazard class identified in your shipping papers, Safety Data Sheet (SDS), or hazardous materials documentation. Always follow applicable DOT and hazardous materials regulations. ([eCFR][2])
Order Custom DOT Hazard Placards Today
Create the exact DOT hazard placard you need by choosing the appropriate hazard class design and adding your required UN identification number. Our custom 10.75" placards provide clear hazard communication for trucks, trailers, containers, and other transportation applications.
Placarding Resources:
[1]: eCFR: 49 CFR 172.519 -- General specifications for placards
[2]: eCFR: 49 CFR Part 172 Subpart F -- Placarding
DOT Chart 16 - Hazardous Materials Markings, Labeling and Placarding Guide
List of Hazardous Materials from 49 CFR 172.101 contains proper shipping names, UN numbers and more (pdf)
Browse truck operation and vehicle safety signs
Review transportation articles and info at SafeWork Insider