In Texas, parking on public roads is generally permitted unless there are specific signs, curb markings, or local ordinances prohibiting it. State law requires that a vehicle be parked parallel to and within 18 inches of the curb, facing in the direction of authorized traffic flow. You are strictly prohibited from parking on a sidewalk, within an intersection, on a crosswalk, or in front of a public or private driveway. Furthermore, you must stay at least 15 feet away from a fire hydrant and 20 feet away from a crosswalk at an intersection. In rural areas, "no parking on the main-traveled part of a highway" is a major safety rule; you must move the vehicle completely off the paved road if possible. Many Texas cities have "Residential Parking Permit" zones where non-residents cannot park during certain hours. Additionally, parking on a "Red Curb" is a universal sign for a fire lane, and "Blue Curbs" are reserved for disabled access with a valid permit. Always check for "No Parking" signs or "Tow-Away Zone" placards, as Texas municipalities are quite aggressive with enforcement and towing, especially in dense urban centers like Austin, Dallas, or Houston.