On a multilane road, the lane intended or reserved for vehicles moving at faster speeds
If someone is living in the fast lane, they have a very busy, exciting life, although they sometimes seem to take a lot of risks. ..a tale of life in the fast lane
the traffic lane for vehicles that are moving rapidly a hectic and pressured lifestyle often characterized by recklessness or dissipation; "life in fashion's fast lane has taught her a lot
high-speed lane, lane on a road or highway that is designated for high-speed travel; fast-paced lifestyle, lifestyle characterized by the desire for instant gratification; shortest or fastest route to
a hectic and pressured lifestyle often characterized by recklessness or dissipation; "life in fashion's fast lane has taught her a lot"
On a motorway, the fast lane is the part of the road where the vehicles that are travelling fastest go