Remember that in Texas all beaches are public highways and all traffic laws apply, including seat belt regulations. All vehicles traveling on Padre Island National Seashore must be street legal and licensed. Please note that, with rare exception, Texas will not license all-terrain-vehicles (ATVs) for use on highways (The National Seashore has one of the few exceptions, because it uses ATVs to patrol for nesting sea turtles.). The driving conditions at the beach are constantly changing due to the currents, winds, and tides.