49 CFR § 5.5 - Regulatory policies.
The policies in paragraphs (a) through (j) of this section govern the development and issuance of regulations at DOT:
(a) There should be no more regulations than necessary. In considering whether to propose a new regulation, policy makers should consider whether the specific problem to be addressed requires agency action, whether existing rules (including standards incorporated by reference) have created or contributed to the problem and should be revised or eliminated, and whether any other reasonable alternatives exist that obviate the need for a new regulation.
(b) All regulations must be supported by statutory authority and consistent with the Constitution.
(c) Where they rest on scientific, technical, economic, or other specialized factual information, regulations should be supported by the best available evidence and data.
(d) Regulations should be written in plain English, should be straightforward, and should be clear.
(e) Regulations should be technologically neutral, and, to the extent feasible, they should specify performance objectives, rather than prescribing specific conduct that regulated entities must adopt.
(f) Regulations should be designed to minimize burdens and reduce barriers to market entry whenever possible, consistent with the effective promotion of safety. Where they impose burdens, regulations should be narrowly tailored to address identified market failures or specific statutory mandates.
(g) Unless required by law or compelling safety need, regulations should not be issued unless their benefits are expected to exceed their costs. For each new significant regulation issued, agencies must identify at least two existing regulatory burdens to be revoked.
(h) Once issued, regulations and other agency actions should be reviewed periodically and revised to ensure that they continue to meet the needs they were designed to address and remain cost-effective and cost-justified.
(i) Full public participation should be encouraged in rulemaking actions, primarily through written comment and engagement in public meetings. Public participation in the rulemaking process should be conducted and documented, as appropriate, to ensure that the public is given adequate knowledge of substantive information relied upon in the rulemaking process.
(j) The process for issuing a rule should be sensitive to the economic impact of the rule; thus, the promulgation of rules that are expected to impose greater economic costs should be accompanied by additional procedural protections and avenues for public participation.