A displaced threshold is a runway threshold located at a point other than the physical end of the runway. The portion of the runway so displaced may be used for takeoff but not for landing. Landing aircraft may use the displaced area on the opposite end for roll out. Aerial picture of a runway of Chennai International Airport, Tamil Nadu A runway is a strip of land on an airport, on which aircraft can take off and land. ... Look up Threshold on Wiktionary, the free dictionary In general, a threshold is a fixed location or value where an abrupt change is observed. ... A Japan Airlines Boeing 747-400. ...

Most often the offset threshold is in place to give arriving aircraft clearance over an obstruction while still allowing departing aircraft the maximum amount of runway available.

Displaced thresholds have arrows as the center line of the runway. A thick white line with usually four arrows pointing in the direction of the runway denotes the end of the threshold and the beginning of the runway. Aerial picture of a runway of Chennai International Airport, Tamil Nadu A runway is a strip of land on an airport, on which aircraft can take off and land. ...