|Environmental feature||Assessment challenges||Proposed modifications|
|Segment slope||Discerning “steep” from “moderate” slope.||Dichotomize the feature as segment with elevation versus flat segment.|
|Curb cuts||Curb cuts at alley-street intersections are unaccounted for.||Record presence/absence of curb cuts at both street-alley intersections and street intersections.|
|Trees||When quantifying trees with nonspecific identifiers (i.e., some/few/none), tree size and type will affect how they are categorized.||Use two absolute categories: trees present versus trees absent. |
Include park trees/trees in front yards of houses if large enough to give shade to sidewalks and protect from precipitation.
|Street parking||Parking rules vary depending on time of day and location.||Include a variety of categories to cover all parking options: for example, free parking on streets, paid parking on streets, time-dependent parking (available only during some parts of the day), no street parking available.|
|Graffiti and litter||Greater littering behavior noted during holidays. High potential for graffiti tags to be overlooked if not actively sought out.||To increase reliability: for litter avoid assessments during days associated with increased waste production (holidays, community events).|
For graffiti; training manuals should include probable graffiti locations (e.g., back of traffic signs, post office mail boxes), so that these are not overlooked.
|Street lighting||Streetlight coverage may vary between different segments of approximately the same length, resulting in a different “amount” of light available per segment.||Quantify light: capture density of streetlights (number per given length of segment) or, alternatively, use a light meter to measure lighting of streets/sidewalks at night.|
|Golf course||Covers a large land area on multiple segments, but accessibility is limited to one or two entry points.||If assessing access to a golf course, only entrance location should be noted, not other points of the area the course spans.|
|Food stores||Classifying food stores which fall into multiple categories (e.g., meat shop that carries a selection of meats as well as other groceries).||Classify according to most prevalent products: for example, if selection of groceries outweighs meat selection, classify as grocery store.|
Resources allowing, record the types of food available rather than classifying the store itself to more accurately represent neighbourhood food availability.
|Seasonal businesses and use of facilities/trails||Existent features that operate seasonally: some may be closed and inconspicuous during time of assessment (e.g., outdoor skating rink during summer assessments or farms selling one type of seasonal produce); others serve multiple functions which are season dependent (e.g., ski hills become hiking trails during summer).||Record all available activities/facilities and businesses (where known) and assign special coding to specify they are season dependent.|