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For most users, the best path is role first. Use this page when you need to locate a relevant 49 CFR section, understand stakeholder relevance, or jump to the authoritative eCFR source.
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Interactive Citation Lifecycle
View the roadside-to-record lifecycle phases with plain-language guidance, common errors, CFR references, and related resources.
Open Lifecycle ToolExplore the Resource Guide
The Resource Guide provides a broader searchable tile and table library of CDL stakeholder materials, organizations, tools, and references.
Open Resource Guide
Last Updated: July 2026
Always verify regulatory language against the authoritative eCFR source. The eCFR is continuously updated but is not the official legal edition of the CFR.
Always verify regulatory language against the authoritative eCFR source. The eCFR is continuously updated but is not the official legal edition of the CFR.