independent guideline; voluntary guideline
A guideline established independently by an organization or industry, often as a self-regulatory measure rather than a legal requirement.
The industry association formulated independent guidelines and requested member companies to comply.
自主規制 refers to self-regulation as a broader concept, while 自主指針 specifically denotes the guidelines or standards created under such self-regulation.
Compound of 自主 (independence, autonomy) and 指針 (guideline, pointer).