The best replacement for rail is truck.

The best alternatives to rail are rated as following:
★★★★★  truck
★★★★★  road
★★  heavy rail
★★  pipeline
★  well
★  weaver rail
★  road transport
★  quail
★  dual rail
★  picatinny rail
★  air travel
★  direct injection
★  coping
★  stile
★  invert mini
★  reflex
★  subway
★  weaver
★  light rail
  bus
  trucking
  brt
  streetcar
  blue train
  single rail power supply
  trenitalia
  no rail 1911
  dune buggies
  pipeline safety
  no rail
  3 rail
  h rail
  automobile
  rocky mountaineer
  passenger rail
  picatinny
  no chair rail
  bed guard
  g4
  radiator
  magpul
  single rail
  wood rail

Your alternative for rail is not listed? Suggest!
Speaking about rail, one probably shouldn't forget about crown molding.

Other search terms related to rail and their ratings are:
★★★★★ crown molding
★★ radiator
★★ wainscoting
★★ ghost ring
★★ side saddle
★ beadboard
You have in mind a companion for rail and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of rail in all years. Click on graph for more.
rail
truck
road