A highway that loops around the perimeter of a major city.
The 'D' shaped frame of a belt buckle
One of the loops of fabric ringing the waist of a pair of pants, used to hold the belt in place.
A toll-free highway.
A highway with grade-separated crossings (rather than level crossings) and designed (and only permitted) for high-speed motor-traffic running in two directions on one separate carriageway each