Narrow Sidewalks

This rule describes mapping rules for sidewalks and vegetation strips parallel to roads, to determine whether to map them as separate features, or whether they should be aggregated with the adjacent road or the adjacent vegetation feature.

1. Mapping rules for sidewalks (a) and vegetation strips (b) parallel to roads, as described in the figure at right.
2. IF both are wide enough to map (a, b >2 m), THEN map two features, a transportation feature for the sidewalk, and a public plantings, household plantings, or disturbed & debris feature for the vegetation strip.
3. IF both are too small to map (a, b < 2 m):
   1. IF the vegetation is less than twice the width of the sidewalk (b < 2a) THEN aggregate the sidewalk and vegetation feature with the road feature.
   2. IF the vegetation strip is more than twice the width of the sidewalk (b > 2a), THEN aggregate the sidewalk and vegetation feature with the larger vegetation feature.
   3. IF unclear whether the vegetation strip is greater or less than twice the width of the sidewalk,THEN aggregate the sidewalk and vegetation feature with the road feature.
4. IF a is mappable, but b is not (a > 2 m > b), THEN aggregate the sidewalk and vegetation strip with the larger road feature
5. IF b is mappable, but a is not (b > 2 m > a), THEN aggregate the sidewalk and vegetation strip with the larger vegetation feature.