middle of the road; on the road
on the way (to one's destination)
道中で突然雨に降られて困った。
I was caught in a sudden rain on the road and had a hard time.
道中で車が故障してしまい、立ち往生した。
The car broke down on the road and we were stranded.
道中に落とし物をしたことに気づいて引き返した。
I realized I had dropped something on the way and turned back.