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T.P.D.M.V.2.4
^•3*12
Traffic Islands and Refuges
4.3.12*1 Section 4.3*9 has already considered in some detail the layout
of the traffic island or central reservation associated with
right turning lanes* This section looks at some general points
affecting islands and refuges and more specific points
concerning minor road channelising islands.
4.3-12.2 Traffic islands are provided at priority junctions for a variety
of reasons viz : to give guidance on intended vehicular paths,
to channelise intersecting or merging traffic, to warn drivers
of the impending junction, to provide shelter for vehicles
carrying out certain manoeuvres and to assist pedestrians*
4.3.12*3 Islands should have a minimum area of 4.5 sq.m. Smaller islands
should be defined by road markings only. The approach nose
should be offset to reduce the risk of vehicles overriding the
island and colliding with the illuminated bollard which should
be located at its apex.
4.3.12.4 Where a traffic island serves as a pedestrian refuge it should
be at least 1.25m wide and have openings in the centre at
+ carriageway level to facilitate pedestrians crossing* Kerbs,
opposite the refuge, should be dropped locally. Care should be
taken to ensure that visibility between motorist and pedestrian
is not obstructed by street furniture.
4.3.12.5 The recommended layouts for minor road channelising islands are
shown in Diagram No. 4.3.16.15 and details of their design are
discussed in Section 4.3.16.