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      No one has yet addressed the issue of aesthetics and asphalt surfaces.
While asphalt may at first impression have a negative visual impact in a
natural setting, it can be made to serve appropriately for the wheelchair
users and rollerbladers while also being aesthetic.  The visual appeal comes
first with the winding of the path. Second, you can also vary the width of
the path (Lusk Leeway), making it wider at stress points such as curves or at
pleasure points such as overlooks.  The path would be the traditional 12 feet
wide for the normal run and then widen to 18 feet or more for a curve.
    With the addition of trees two visual factors change.  Leaves and pine
needles fall on the asphalt. Though you don't want an abundance of wet leaves
for bikers or in line skaters, random leaves do break up the blackness
associated with a massive parking lot.  Second, the overhead canopy can cast
dappled light on the aspalt surface.  It is best to change the texture and
density of the adjacent trees' shadow so that the tones vary along the path
length from dense shade to lacier shade to open sun.
Anne Lusk (dissertation topic)