What is "beltways"

Usage examples of "beltways".

And in the sky, above the highest to the criss-crossing beltways, Alp saw a flying shape like a monstrous mosquito, its wings invisible.

There wasn't much of Maryland wilderness left between the beltways of Washington and Baltimore anymore, but Montgomery County had enough rich people to preserve their farms and horse-country stuff.

Malls, corporate parks, bustling places at the edges of roaring beltways.

I prefered it, for man was meant to walk, not be transported effortlessly by miles-long beltways.

People move on elevators, escalators, beltways, maglev/tube trains, the occasional hoverbus.

The shot rose and rose, a small core of metal scurrying toward the distant beltways of matter grinding mutely to the west above them all.

In a matter of seconds Bruce found he had to step off the beltway he was standing on, and onto another, wider faster one, as they entered a vast cavern full of Skidians going this way and that on similar beltways set in the floor.