What is required for commercial motor vehicles used for intra or interstate commerce that are licensed for more than 12,000 lbs?

For commercial motor vehicles used in intra or interstate commerce that are licensed for more than 12,000 lbs, the requirement includes having one fire extinguisher rated at 5 B:C or more. This regulation is in place to ensure that in the event of a fire, the driver has the proper equipment to manage or mitigate the situation. Fire extinguishers are crucial for safely addressing small fires that could arise from various causes, including mechanical failures or cargo hazards. The specified rating indicates the extinguisher's effectiveness against different types of fires, particularly those that may involve flammable liquids and electrical equipment, which are pertinent in the context of commercial vehicle operation.