Where are the mandatory rules posted for using jack stands, etc.?

[larrybard]

Is there any place on the RTR website -- or elsewhere -- that mandatory rules such as using jack stands (rather than relying solely on a floor jack for support) and wheel chocks when changing tires is memorialized?  Or because such practices are basically a matter of common sense and standard safety practice there isn't any perceived need to document them?  I have read the safety rules I could find on the website, especially "Safety Tech Information," but didn't see anything on the subject.