3 adjectives to describe highroads

Then in a flash the car had left the village and was rushing along the dusty highroad, the huge, ominous pillar of smoke growing nearer.

All of them made their way up the broad highroad toward home or tea, as the case might be.

Then she slipped out by the servants' stairway, and through the garden, to walk in the wood lane that ran northward, joining the two parallel highroads; for her healthy body needed air, and she knew that if she did not have it, she could not control herself to keep peaceful silence for even the few days that remained.

3 adjectives to describe  highroads