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Right of way (ROW) or land width is the width of land acquired for the road,
along its alignment.
It should be adequate to accommodate all the cross-sectional elements of the
highway and may reasonably provide for future development.
To prevent ribbon development along highways, control lines and building lines
may be provided.
Control line is a line which represents the nearest limits of future
uncontrolled building activity in relation to a road.
Building line represents a line on either side of the road, between which and
the road no building activity is permitted at all.
The right of way width is governed by:
- Width of formation: It depends on the category of the highway and width
of roadway and road margins.
- Height of embankment or depth of cutting: It is governed by the
topography and the vertical alignment.
- Side slopes of embankment or cutting: It depends on the height of the
slope, soil type etc.
- Drainage system and their size which depends on rainfall, topography
etc.
- Sight distance considerations : On curves etc. there is restriction to
the visibility on the inner side of the curve due to the presence of some
obstructions like building structures etc.
- Reserve land for future widening: Some land has to be acquired in
advance anticipating future developments like widening of the road.
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