Terms and Conditions
Effective date: August 29, 2026
By using this publication, you agree to the terms below. If you don't agree with them, don't use the publication.
#What this publication is
Commonway System is a reference guidebook to street and road design patterns, compiled by an enthusiast and researcher, not a licensed engineer or planner. Every prescriptive claim in the guidebook is meant to trace back to a cited source; where it doesn't yet, the claim carries an unsourced-claim flag⚠. See The Commonway System for the full explanation of how and why it's built this way.
#Not professional advice
Nothing on this publication is engineering advice, legal advice, or a substitute for a licensed professional. Real construction and policy changes require a licensed engineer's review, government approval, and local jurisdiction compliance, none of which this publication provides or is a substitute for. Any application of the patterns described here, in design, construction, policy, or advocacy, is done at your own risk.
#No warranty, information may be incomplete or wrong
This publication is provided "as is," without warranty of any kind. We do not guarantee that any information on this publication is accurate, current, or complete. Mistakes happen, sources go out of date, and unsourced claims exist and are labeled as such, but a claim carrying a citation is not a guarantee that the citation was applied correctly or that the underlying source itself is error-free. Verify anything you intend to rely on against the original source, and against a licensed professional where relevant, before acting on it.
#Limitation of liability
To the fullest extent permitted by law, Commonway System and its maintainer are not liable for any damages, direct or indirect, arising from your use of this publication or reliance on its content. This includes, without limitation, damages resulting from errors, omissions, outdated information, or decisions made based on anything published here.
#Brand, trademark, and visual identity
The Commonway System name, logo, wordmark, color system, and overall visual identity are not covered by the publication's code license or by the content-contribution terms described on the Submit a Change page. They remain the property of the Commonway System project and are reserved. Nothing in this publication's code license, content terms, or the act of contributing to the guidebook grants any right to use, reproduce, modify, or create derivative versions of the Commonway System name, logo, or brand identity without prior written permission.
#Code and content licensing
The publication's underlying code is open source under the MIT License; see the LICENSE file(opens in new tab) in the repository. A small number of icons are reproduced from the third-party Lucide(opens in new tab) icon set under its own license; see THIRD-PARTY-NOTICES(opens in new tab). The guidebook's written content is licensed separately: Commonway System retains the rights to the compiled guidebook, and contributors grant a license to use their submissions as described on the Submit a Change page. These are two different licenses covering two different things, and neither extends to the brand elements described above.
#Contributions
Submitting a correction, citation, or new pattern proposal through the project's GitHub repository is governed by the terms on the Submit a Change page and the repository's Code of Conduct(opens in new tab). We reserve the right to decline, edit, or remove any contribution.
#External links
The guidebook cites and links to external sources throughout: government manuals, published studies, agency websites. We don't control those sites and aren't responsible for their content, accuracy, or availability.
#Governing law
These terms are governed by the laws of the State of South Carolina, United States, without regard to conflict-of-law principles. Any dispute arising from this publication is subject to the jurisdiction of the courts of Horry County, South Carolina.
#Changes to these terms
These terms may be updated as the project develops. Updates are reflected in the publication's version history; see Release History & Roadmap. Continued use of the publication after a change means you accept the updated terms.
#Severability
If any part of these terms is found unenforceable, the rest remains in effect.
#Contact
Questions about these terms can be directed to [email protected].