我僅用英文為例,google "freeway driving rules",第一篇就是:
http://www.mto.gov.on.ca/english/dandv/driver/handbook/section2.9.2.shtml
"Use the far left lane of a multi-lane freeway to pass traffic moving slower than the speed limit, but don’t stay there. Drive in the right-hand lane when possible. On many freeways with three or more lanes in each direction, large trucks cannot travel in the far left lane and must use the lane to the right for passing. Get into the habit of driving in the right lane, leaving the other lanes clear for passing."
其實只要是四線道以上,都應該比照。
