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<br />Planting Strips and Street Trees <br /> <br />Design Guidelines <br /> <br />1) Street trees should be provided along all <br />arterial and collector streets to: <br /> <br />a) Separate and define the boundaries be- <br />tween pedestrian areas and vehicle use areas. <br />This separation reduces the impacts of traffic <br />volumes and speeds on pedestrians and <br />adjacent land uses; <br /> <br />b) Provide tranquility on the street, slowing <br />the pace and intensity of street activity and <br />enhand ng the well bei ng of pedestrians and <br />motorists; <br /> <br />c) Provide shade in the summer and allow <br />sunlight in the winter; <br /> <br />d) Reduce the automobile scale of major <br />streets to human scale; <br /> <br />e) Provide the motorist with a vertical wall, <br />helping motorists to gauge their speed; <br /> <br />f) Create an outdoor room which helps <br />provide a sense of enclosure and security; <br /> <br />g) Reduce air pollution; <br /> <br />h) Provide identity to the street, orientation of <br />the street within the system of streets within a <br />city, and provide a status and prestige to <br />addresses along the street; <br /> <br />i) Reinforce the design and hierarchy of the <br />arterial and collector street system; and <br /> <br />j) Intercept rainfall and absorb stormwater runoff. <br /> <br />2) Provide continuous, uniformly and closely <br />spaced tree plantings to create a continuous <br />canopy along the length of and across the width <br />of the street. Tree spacing should connect to <br />form a continuous tree canopy over the street. A <br />minimum spacing as low as 10 feet is possible <br />depending on the tree species. Closer tree <br />plantings can be achieved when the diameter of <br />the tree trunk will remain relatively narrow. <br /> <br /> <br />Planting strips allow for planting of large-soale, <br />hlgh- oanopY street trees on major streets <br /> <br />16 <br />