> This suggests a trivia question, which I do not know the answer to: what lane in the US goes the farthest without a split or dead-end? Similar question for other countries.
I-80 starts in San Francisco and ends in New York City, but I'm certain there are splits that would make you change to some other highway if you stayed in the left lane.
Likewise, I-90 starts in Seattle and ends in Boston and travels through Montana.
I-80 starts in San Francisco and ends in New York City, but I'm certain there are splits that would make you change to some other highway if you stayed in the left lane.
Likewise, I-90 starts in Seattle and ends in Boston and travels through Montana.
My guess would be I-90, just because of Montana.