Each of the travel lanes in the Lincoln Tunnel's center tube is reversible. In general, both of the lanes, including the exclusive bus lane, serve Manhattan-bound traffic during the weekday morning rush hour, both of the lanes serve New Jersey-bound traffic during the weekday evening rush hour, and one lane is provided in each direction during other time periods. New Jersey-bound traffic normally uses both lanes of the north tube and Manhattan-bound traffic normally uses both lanes of the south tube.