From Longman Dictionary of Contemporary Englishthe outside lanethe outside laneTTR British English the lane that is nearest the middle of the road SYN fast lane OPP the inside lane, inside lane → outside
Examples from the Corpus
the outside lane• Allan was allowed in as a guest in the 200 metres, but was given the outside lane.• In Sunday's final we were drawn in the outside lane.• Voice over On the M40, our police driver struggles to keep up with a car in the outside lane.• At worst they see the future as two motorway lanes blocked with slow lorries with just the outside lane for the car driver.• She was waiting in the outside lane of a busy road in St Helens to turn right when the accident happened. 