Acknowledgements

Sign designs and references

• The Bureau of Reclamation’s Sign Guidelines for Outdoor Public Use Areas, the source for our entrance, attraction, directional, campsite and trailhead layouts — letter sizes, spacing, arrows and symbol placement.
• The Bureau of Land Management’s National Sign Handbook (H-9130-1), for the recreation trapezoid, guide-row order, distances and informational markers. We use its layout rules only — never the BLM emblem or wordmarks.
• The Federal Highway Administration’s Manual on Uniform Traffic Control Devices (MUTCD), for recreation brown, the symbol-sign conventions and the prohibition slash.
• Wikimedia Commons contributors and the FHWA Standard Highway Signs, the source of the hiker, bicycle, horse and wildlife pictographs on our symbol tiles.

Weathered and rusty finishes

The idea for offering signs in different states of wear — a clean, brand-new sign by default, or a weathered or rusty one — came from the US Road Sign Generator on Superhive Market, whose clean, weathered and rusty material options inspired the Weathering and Rust sliders in our sign builder. Our version is drawn independently, as procedural SVG filters, so every finished sign is still a single vector file. Thank you for the idea.

Sibling sites

Park-Signs.work shares its sign engine with Trail-Signs.work, for trail navigation signs, and Road-Signs.work, for MUTCD road and street signs.