What is an interchange where a road that has little traffic crosses a busy expressway?

An interchange where a less trafficked road crosses a busy expressway is typically designed as a grade-separated interchange, often involving overpasses or underpasses. This design allows for smooth traffic flow on the expressway while minimizing delays for vehicles on the minor road. Common configurations include diamond or cloverleaf interchanges, which help manage the differing traffic volumes effectively. Such setups enhance safety and reduce congestion on both routes.