When it comes to synonyms for the term 'super highways' there are many to choose from. One synonym for super highways is expressways, which refer to high-speed roads that allow for uninterrupted travel. Other synonyms for super highways include freeways, motorways, and interstates, which are all designed to accommodate high volumes of traffic and facilitate fast, safe travel over long distances. Additionally, parkways, boulevards, and thoroughfares also fall under the umbrella of super highways. Whether you're looking for an alternate term to use in your writing or simply want to broaden your vocabulary, these synonyms are sure to come in handy.