いっぽんみち

一本道
a direct unforked road

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いっぽんみち【一本道】

an unforked [a direct] road; a road without a fork; a single path.

●彼女は畑の中の一本道を一人で歩いていった. She walked alone down the single path that cut through the fields.

●それは地平線まで続く長い一本道だった. It was a long straight road that continued on to the horizon.

・ここから町までは一本道ですから, もう迷う心配はありません. The road goes straight from here all the way to town, so you needn't worry about losing the way.