41 lines
1.4 KiB
Markdown
41 lines
1.4 KiB
Markdown
# lane-icons research
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Source: <https://github.com/openstreetmap/lane-icons>, inspected 2026-08-04.
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## Provenance
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- Owner: `openstreetmap` GitHub organization.
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- Repository tree revision: `db3cab321da93a757c2cf3cdb4f1f1db6b1a091c` (`master`).
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- License: `LICENSE.md` is CC0 1.0 Universal. Keep that text adjacent to any
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vendored source assets.
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## Relevant Contents
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- `docs/through.svg`
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- `docs/left.svg`
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- `docs/left-through.svg`
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- `docs/slight_left.svg`
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- `docs/slight_left-through.svg`
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- `docs/sharp_left.svg`
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- `docs/sharp_left-through.svg`
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- `docs/reverse_left.svg`
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- `docs/reverse_left-through.svg`
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- `docs/reverse_left-left-slight_left-through.svg`
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- `docs/left-slight_left-through.svg`
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## Design Rules
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`DESIGN.md` bases arrows on the MUTCD Standard Arrow. It specifies a shared
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shaft for compound arrows, smooth curves, aligned arrow bottoms, and reduced
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arrowhead scale as the number of directions grows. The upstream SVGs are
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single-color and stroke-free; our existing render layer supplies the project
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fill and outline treatment.
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## Adoption Decision
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Vendor all listed arrow SVGs with provenance and CC0 license text. The
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production mapping is initially restricted to `through`, `left`, `right`,
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`through;left`, and `through;right`. Right-side variants are deterministic
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mirrors of upstream left-side assets. Every other vendored arrow remains
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explicitly untested and unavailable to the production mapper.
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