Per Regulation 637, what information must be printed on the exterior of a vehicle transporting pesticides?

• A. The name of the pesticide applicator firm and the business contact information
• B. The name of the pesticide applicator firm
• C. The business phone number, address, or U.S. DOT census number of the firm
• D. The license plate number of the vehicle

Answer: (C)

Pesticide transport labeling requires clear identification of the firm responsible for the shipment and a reliable way to contact or identify them. The exterior of the vehicle must display information that lets responders or inspectors reach the responsible party or verify regulatory status. Specifically, the required details include the business phone number, the firm's physical address, or the U.S. DOT census number. This combination ensures there is a direct means of communication or a formal identifier for tracing the shipment, which is crucial during emergencies or compliance checks. Displaying only the firm’s name or the vehicle’s license plate doesn’t guarantee contact or proper regulatory identification, so the phone number, address, or DOT number is the information that best fits the safety and accountability goals.