Description
Compare a platform walking distance with a supplied reference distance.
Planning measurements depend on lot boundaries, excluded area, frontage, ground datum and the unit or person being served. A footprint fraction and a width margin answer different geometric questions. Accessibility, easement rights and zoning compliance depend on verified conditions and applicable requirements beyond a supplied flag or numerical comparison.
Compare a platform walking distance with a supplied reference distance.
When to use this tool
Use Transit Stop Platform Walk Offset when you already have referenceWalkingDistance, recordedPlatformWalkingDistance and need to compare a platform walking distance with a supplied reference distance.
How to use the tool and how it works
- Enter referenceWalkingDistance, recordedPlatformWalkingDistance. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read signedGap. Use the output convention below.
Return recordedPlatformWalkingDistance-referenceWalkingDistance in the same length unit.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| referenceWalkingDistance | Reference Walking Distance | Required. Finite number. |
| recordedPlatformWalkingDistance | Recorded Platform Walking Distance | Required. Finite number. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| signedGap | Signed Gap | Required. Finite number. |
{
"input": {
"referenceWalkingDistance": 12,
"recordedPlatformWalkingDistance": 17
},
"output": {
"signedGap": 5
}
}Limitations and assumptions
- No route, walking time, obstacles or actual accessibility are evaluated.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.
Alternative or Complementary methods
Use a verified survey, route inspection and the applicable planning definitions for actual coverage, access or height questions. Separate a supplied geometric margin from the documentation needed to establish an easement or accessibility condition.
References
Similar or alternative tools
- Urban Block Facade Gap Fraction
Calculate marked facade gaps as a share of total frontage.
- Public Space Frontage Per Unit
Calculate public-space frontage per supplied unit.