Various model sign codes and related guidance documents have been published, and many can be viewed in their entirety including the following:
From The Sign Research Foundation http://www.signresearch.org/research-sign-codes/
From the USSC Foundation https://usscfoundation.org/wp-content/uploads/2018/03/USSC-Model-On-Premise-Sign-Code-2018.pdf
From the Sign Research Foundation https://www.signresearch.org/wp-content/uploads/A-Framework-for-On-Premise-Sign-Regulation.pdf
