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Kerbs,
including channels, quadrants, angles
etc. are intended to separate surfaces
at the same or at different levels to
provide a physical and visual delineation
or containment.
They also provide a separation between
surfaces submitted to different kinds
of traffic.
To
improve visual contrast between surfaces,
for example between
footpaths and roadways, kerb units may
be painted. These painted kerbs are not
clearly visible to the motorist during
wet conditions, especially at night.
An
innovatory development is the reflective
directional K-7 kerb (patent PCT/SG00059),
now used in Singapore. The units are manufactured
with an integrated surface reflective-mix
to provide an economic and more effective
alternative to painted kerbs.
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