rules of the road

/R UW1 L Z AH0 V DH AH0 R OW0 D/
noun
  1. 1

    The laws that govern driving, especially of motorists and cyclists.

  2. 2

    (metaphoric) A set of standard procedures or regulations governing the way something is done.

Synonyms

Source: https://en.wiktionary.org/wiki/rules%20of%20the%20road