clearway

plural clearways

1. AustraliaNew ZealandUKA 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, Institute of Marine Engineers, Marine Engineers Review, page 190

   1 more example

   The red cross means no stopping, not even to pick up or set down passengers. The sign is used to indicate a 24-hour clearway (usually on a rural road) or may be incorporated into other signs with the words “No stopping” (e.g. the “no stopping except local buses” sign at bus stops. On a 24-hour clearway, the prohibition of stopping applies only to the main carriageway. You may stop in a lay-by unless there are signs to say otherwise. A 24-hour clearway does not have any special road markings, but there should be smaller repeater signs at approximately one mile intervals.

   2007, UK Department for Transport, Know Your Traffic Signs, page 55

2. aeronauticsAn 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, Antonín Kazda, Robert E. Caves, Airport Design and Operation, page 100