The phrase "single lane" refers to a road or a path that can only accommodate one vehicle or person at a time. It means there is no additional space or separate lanes for passing or for multiple directions of traffic. Full definition
Designed to complement your natural abilities, ProPILOT Assist is a suite of advanced technologies that helps you on single lane highways. (infiniti.com)
Cock - of - the - Rock Lodge is located in cool, mosquito - free cloud forest at 5000 feet (1600 m) of elevation along the amazingly wild single lane road from Cusco to the Manu lowlands. (adventure-life.com)
Right now it only has the ability to work during single lane highway driving, but within the next two years the technology will be able to take over during multi-lane highway driving. (thetorquereport.com)