Used to describe highways with tolls, but not all highways. It's specific to toll roads. Remember, not every highway is a turnpike; only if it has a toll.
Pro Tip 2/3
Cultural Context
Turnpikes are common in the US. They're part of many American road trip experiences. They stopped at several turnpikes during their cross-country road trip.
Pro Tip 3/3
Fee Implication
The word implies there's a cost for travel, which can affect budgeting for trips. When planning our route, we considered avoiding the turnpike to save money.