ghost island

A ghost island is a marked area of road surface, typically filled with diagonal white lines or cross hatching, that sits between opposing lanes of traffic. It creates a physical and visual buffer zone where drivers can wait to make a right turn across oncoming traffic, or where traffic flows are separated to manage speed and direction. The area is called an island because it functions as a refuge, but it is a ghost island because vehicles do not actually stop there for extended periods, unlike a conventional traffic island.

The marking serves several practical purposes in traffic management. On roads with medium to heavy two-way traffic, a ghost island gives a turning driver a safe intermediate position to complete their maneuver in two stages: first, they pull into the hatched zone and wait for a gap in opposing traffic, then they complete the turn when safe. This is far safer than attempting a single turn across multiple lanes of fast-moving traffic. On some roads, the ghost island is also used to separate opposing flows entirely, forcing drivers into clearly defined corridors and reducing head-on collision risk.

The term reflects the nature of the feature. Unlike a solid roundabout or traffic island that vehicles physically circulate around, a ghost island is temporary and ethereal from the perspective of traffic flow, it is a psychological and legal space rather than a solid obstacle. Drivers enter it only to wait briefly before moving on. The cross hatching is intentionally uneven and visually busy so drivers understand the area is not a lane to drive through continuously.

Ghost islands are common in the United Kingdom and Australia, where right-hand turns across traffic are frequent. They appear on rural A roads, suburban high streets, and urban dual carriageways. Road authorities adjust the width and length of the hatched zone based on the speed of traffic and the expected queue length during peak turning demand. Poorly dimensioned ghost islands, particularly those too narrow or positioned at confusing angles, can increase accidents rather than prevent them.

The marking must comply with traffic sign standards and road marking regulations specific to each jurisdiction. In the UK, the Road Traffic Regulation Act and Department for Transport guidance govern their installation and design. Poor visibility, worn markings, or driver unfamiliarity with the concept can reduce effectiveness, especially among drivers trained in other traffic systems where the feature does not exist.