2002, Joseph Brodsky, ‎Cynthia L. Haven, Joseph Brodsky: Conversations, page 169:And he was just taking byways and sideways, travelling in the peripheries of civilization, yeah?
2006, David Haskell, Roundabout the USA, page 103:In time our way merged into a throng of cars flowing here and there on the highways and sideways of the north side of Los Angeles.
2013, Pitou van Dijck, The Impact of the IIRSA Road Infrastructure Programme on Amazonia, page 81:Expansion of economic activities resulted in the construction of a so—called fishbone pattern of roads and sideways.
Full definition of sideways
Adjective
sideways
Moving or directed toward one side.Giving Mary a sideways glance, he said,....He gave the ball a sideways kick.
(informal) Positionedsideways (with a side to the front).There was a stack of papers in front of each seat at the table, but each stack was sideways.
(informal) Neither moving upward nor moving downward.Once we get out of this sideways economy, our figures will more accurately reflect what we're truly capable of.
(usually with "with", informal) In conflict (with); not compatible (with).He was constantly getting sideways with his boss till he got fired.
Adverb
sideways
With a side to the front.He builds houses sideways, with the front door on the side.
Towards one side.A bishop moves only diagonally; a rook, only sideways, forward, and back.He looked sideways at the new arrival, wondering who she was.