Landscape plantings have many more specific uses. They can 
eliminate headlight glare between opposite lanes of a divided high- 
way. Miultiflora rose hedges have safely caught or slowed auto- 
mobiles that veered off the pavement. Long rows of these plants, 
however. can become monotonous if not used with discretion. Trees 
and shrubs form excellent sound barriers to separate highway noise 
from adjacent residential or park areas Plants that provide food for 
interesting species of wildlife can be introduced. Wild creatures 
should be thus attracted to areas where they can be conveniently and 
safely observed by the traveling public, but will not become a hazard 
on the highway. 
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Plants are commonly used to control erosion. If properly located 
they will also control snow drifting and thus reduce maintenance 
costs. Trees are often used to help guide motorists around curves 
and through intersections. Proper planting and thinning can en- 
hance the traveler’s enjoyment of near and distant scenery. 
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