clearway

noun2

1. •
   (UK, Australia) A road or other path that is kept free of obstructions, or on which stopping is strictly regulated, in order to maintain free flow of movement.

   • The traffic lanes of the sea can be clearways for thousands of miles. — 1975
2. •
   An area projecting from the end of a runway that is kept clear of obstructions exceeding a height that increases with distance from the end of the runway.

   • A clearway may be provided to extend the takeoff distance available (TODA) beyond the end of the hard surface which defines the declarable length of the available takeoff run (TORA). — 2007