The term 'Turnpike Interchange' is a type of highway interchange that is characterized by the use of a cloverleaf design. This design consists of four curved ramps that allow vehicles to enter and exit the highway in a safe and efficient manner. The cloverleaf design is often used in areas with limited space, as it requires less land than other types of interchanges. It is also a popular choice for busy highways, as it allows for smoother traffic flow.