a road on which only emergency stops are permitted.
Origin of clearway
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British a stretch of road on which motorists may stop only in an emergency
an area at the end of a runway over which an aircraft taking off makes its initial climb: it is under the control of the airport
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012