Is This Different From HC?

The MUTCD once used the designation “HC” which meant Hazardous Cargo. It was updated in the 2003 MUTCD to “HM”. Most municipalities have updated their road signage, but the HC sign was in use for many years.

You are watching: What does no hm sign mean

Why the Change?

The letter change from HC to HM was made in the 2003 MUTCD to match industry standards. Some commercial vehicles carried dangerous substances that might not be strictly considered cargo. The MUTCD didn’t elucidate the change, just notated it in all of its materials.

Why are These Standardized Signs Important?

It is estimated that there are nearly one million shipments every day of dangerous substances in the United States. It’s important for truck drivers to know the routes to drive when carrying hazardous materials. If the vehicle was in an accident or the elements exposed to the environment along certain routes, the consequences could be devastating.

Roadway signage provides information on the road, but vehicles transporting potentially harmful substances are required to have their own signage that identifies the cargo to alert people about contents inside. These workplace placards keep workers safe, but many people aren’t always aware of what these safety placards mean. Standardization is vital to maintaining order across the board to educate people.

See more: How Many Miles Is 250 Kilometers To Miles, How Long Is 250 Kilometers In Miles

The Occupational Health and Safety Administration (OSHA) also mandates dangerous material labeling in the workplace for uniformity and recognition. Training people to recognize a standard sign that identifies hazards keeps workers safe. These signs are recognized by the United Nations as a way to identify potentially harmful elements and workspaces.

Signs such as these are important to safety, but so is training and education to keep everyone safe. Without proper labeling of dangerous substances, no one knows what to watch for. Without training workers to recognize signage, they won’t be able to understand the signage. Having the right indicators reduces the employer’s liability and increases safety.Hazmat drivers undergo extensive training to transport dangerous substances. Understanding road and workplace signage of hazardous elements must be standard no matter where the training is received.


Get High-Quality, Professional Signage

potentially harmful materials placards are vital to roadway safety, as well as regulation of traffic on roadways. If your city is in need of accurate signage, contact Worksafe Traffic Control Industries for the best in road management and safety. Our products are MUTCD-certified and compliant, so you can trust that they will accurately communicate the information your drivers need. We provide excellent customer service, with a 7-day turnaround on most orders, you’ll be able to keep your citizens safe.