No, you are not permitted to consume alcoholic beverages on the historic RTA streetcars in New Orleans. While the city is famous for its liberal "open container" laws, which allow pedestrians to carry alcohol in plastic cups throughout the French Quarter and other designated districts, these rules do not extend to public transit vehicles. RTA policies strictly prohibit eating, drinking, or smoking on all streetcars and buses to maintain cleanliness and passenger safety. If you are caught with an open beverage, even in a plastic "go-cup," the conductor may ask you to finish it before boarding or dispose of it. However, it is a common sight to see people waiting at streetcar stops with their drinks; the key is simply to ensure your cup is empty or discarded before you step onto the vintage mahogany and brass cars. This policy helps preserve the interior of the St. Charles line, which is the oldest continuously operating street railway in the world and a National Historic Landmark.