Refuge Island or Channelizing Island
Traffic island is raised areas constructed within the roadway to establish physical channels through which the vehicular traffic may be guided.
The size and shape of refuge islands depend upon the layout and dimensions of the intersections.
Purpose of Refuge Island
⇰ The traffic islands provided at entries and exits of traffic rotary are called channelizing island or refuge island.
⇰ These are very useful as traffic control devices for the intersection at grade. These are used to guide the traffic into a proper channel through the intersection area.