Urban Road Pedestrian Accessibility

Urban Road: Pedestrian and Accessibility Interface

Overview

Where a building meets the street, the architect owns the sidewalk frontage in practice even though the road authority owns the standard. This skill carries the dimensions an architect checks when a ground-floor plan, a setback, or a site entrance lands on an urban-road sidewalk.

Before applying any value here, confirm which instrument and version govern and whether the section is co-aligned with a highway, via urban-road-code-fundamentals. The 應/不得/宜/不宜 wording rules defined there apply to every value below: "shall" renders 應 or 不得, "should" renders 宜, "should not" renders 不宜. Note 不宜 is a default prohibition (do not do it unless justified), not a soft hint, so a 不宜 breach carries a heavier burden to justify than a plain 宜.

Accessibility here is the on-road portion (accessible route, kerb ramps, tactile guidance within the road right-of-way). Accessibility inside the building follows 建築物無障礙設施設計規範, a parallel instrument; a compliant design satisfies both.

Sidewalk Clear Width (§6.1)

Clear width is the sidewalk total minus public facilities, the continuous walkable space.

• Should be 2.5 m or more; shall not be less than 1.5 m in general conditions.
• Where road width is 12 m or less, shall not be less than 1.2 m.
• Where site conditions constrain and the competent authority consents, shall not be less than 0.9 m.
• Central green strip case: where a green strip sits at the sidewalk centre, the two flanking clear widths shall sum to at least 2.1 m, and neither side may be less than 1.2 m. Passing the sum does not pass the per-side floor. This is the most common misread.
• Motorcycle bays are as a principle not marked on sidewalks; where marked with consent, remaining clear width shall not be less than 1.5 m.

Sidewalk Slope and Clear Height (§6.2)

• Cross slope: minimum 0.5%, maximum 5%.
• Longitudinal slope: should be 5% or less; shall not exceed 12%.
• Clear height: should be 2.1 m or more, with no 0.1 m projection intruding between 0.6 m and 2.1 m at the side of the route. This governs street-tree branch height and shrub overhang.

Vehicle Crossings over the Sidewalk (§6.3)

The point where a site driveway crosses the sidewalk, an architect's item on almost every project.

• Crossing slope should not exceed 16.67% (1:6).
• Platform width should be 1.5 m or more, minimum 1.2 m.
• A mountable kerb should be used.

Paving and Separation (§6.4, §6.5)

• Permeable paving is allowed provided infiltration does not damage the carriageway subgrade; where a planting strip is present, sidewalk runoff should be directed into it.
• Separation from the carriageway is preferred and may be a kerb, bollard, railing, planter or hedge (§6.5.1).

Public Utility Strip (§13.2, §13.3)

• Primary and secondary roads shall provide one; service roads should, subject to need and land.
• Width should be 1.5 m as a principle, and should not be less than 0.8 m.
• Set to the widest facility on the section; consolidate poles and signs into it; put cables underground where practical.
• Facilities shall satisfy intersection sight distance and shall not obstruct the accessible route.
• Tree pit kerbs shall as a principle be flush with the paving; after a continuous green strip or planter is added, sidewalk clear width still governs per §6.1.

Kerbs (§15.1)

• By height and slope: mountable (可跨式) where h < 10 cm; between 10 and 15 cm the slope decides (V/H ≤ 1 mountable, V/H > 1 barrier); barrier (屏障式) where 15 < h ≤ 20 cm; above 20 cm only in special cases.
• Sidewalk kerbs should be barrier type not exceeding 15 cm; median kerbs barrier type not exceeding 20 cm.
• Service roads may use mountable kerbs where emergency vehicle access is a consideration.

Accessibility on the Road (§14)

• Accessible-route clear width follows §6.1, clear height follows §6.2; longitudinal slope should be under 5%, and should not exceed 8.33%.
• Where clear width is under 1.5 m, provide a turning platform at each turn and passing platforms at intervals; each platform at least 1.5 m by 1.5 m, spacing should be under 60 m.
• Kerb-ramp clear width (excluding flared sides) should be 1.5 m or more; ramp slope should be under 8.33%; where the level difference is 20 cm or less, the width may be relaxed per table 14.2.1.
• At the junction of sidewalk and pedestrian crossing, no bollard as a principle; where required, clear spacing between bollards shall be 1.5 m or more, height should be 0.6 to 0.75 m.
• Tactile guidance tiles shall conform to CNS 15933 and CNS 16106.