The phrase "auto road" is correct and can be used in written English, though it is somewhat dated.
It is typically used to refer to a road designed for automobiles, often in a historical or regional context.
Example: "The scenic drive along the auto road offered breathtaking views of the mountains."
Alternatives: "motorway" or "highway".
"That's what we've been working on: a 21st-century mobility project, not just traditional auto road capacity," she said.
"What we are doing here today is exactly why the road was built 150 years ago," said Howie Wemyss, the general manager of the Mount Washington Auto Road.
I drove nearly 300 miles on two-lane roads, including eight miles up the steep Mount Washington Auto Road in New Hampshire, and easily averaged 43 m.p.g.
Monadnock is said to be the most-climbed mountain in the United States (discounting those with an auto road or funicular).
"It doesn't take much to make the hike as long as you want or as short as you want," Mr. Smith said, adding that there is an auto road to the castle.
Like many would-be Bumps racers, Lyne Bessette, a former professional with the Team Saturn women's squad, is intrigued by the concept, although she has signed up only for the Mount Washington Auto Road Hillclimb.
He tells the story of Cyrus Avery, an Oklahoma entrepreneur who persuaded the government to stitch together bike paths, auto club roads and pieces of existing highways into a cross-country route.
They also cause congestion when they compete with autos for road space.
If you don't mind hitting the road, Auto Driveaway will let you drive someone else's vehicle from one point to another.
You can choose from 2-Hi (for regular driving on dry roads) Auto 4WD for automatic lockup of all four wheels when traction is lost, 4-Hi for constant off-road conditions, and 4-Lo for ascending or descending steep grades.
He said, "We've cleaned up a lot of pollution — the air is much better, though we have three times the number of autos on the road.
