Prohibited Items for Highway Travel
TSA recommends you consult your transportation provider or operator for a prohibited items list, as it will vary from company to company.
To provide an example, Greyhound has a list of prohibited items on their website in the Frequently Asked Questions (FAQs) section. Their policy says:
"Prohibited items include acids, ammunition, animals, combustible liquids, compressed gases, explosives, firearms of all types, fireworks, flammable liquids, furniture, hazardous materials (poisons, radioactive materials, etc.), materials with a disagreeable odor, matches, merchandise for resale, protruding articles, or any unsecured articles including those in plastic or paper bags. Electronic equipment (television, stereos, etc.), film (flammable), and perishable items (food) may be sent using Greyhound Package Xpress with appropriate packing. Items such as money and prescription medication may not be checked as baggage and are to be carried in the customer's possession..."
