Interstates, also known as highways, expressways, freeways or motorways, are commonly used for long-distance travel across the country. Synonyms for interstates also include autobahns, turnpikes, tollways, parkways, and throughways. These synonyms vary by region and context. For instance, autobahns are used to describe high-speed highways in Germany, while turnpikes are toll roads found mainly in the northeastern regions of the United States. Meanwhile, parkways are scenic routes with limited access to commercial vehicles, while throughways are often used interchangeably with highways. Ultimately, the choice of synonym depends on the context and location of the road in question.