Every record shows which rules it ran under.
Software that answers regulatory questions has to answer one about itself: is the rule text behind this determination current? Here is how HaulGuard AI handles that — not as a promise on a webpage, but as a date printed on every record.
The date is on the record, not just this page
Most compliance tools tell you their rules are current somewhere in a changelog. HaulGuard stamps it on each determination: every scan records the eCFR currency date of the placarding rules (49 CFR part 172 subpart F), the Hazardous Materials Table (§ 172.101), and the segregation table (§ 177.848) it was evaluated against, and the compliance record prints those dates. Two scans a year apart each carry their own dates — so an inspection-ready record from March still shows exactly what the rules said in March.
Every citation in a determination also links to the current official text at eCFR.gov, so "prove it" is one tap — against the government's own site, not our copy of it.
Current regulatory text dates
| Section | Covers | Text current as of |
|---|---|---|
| Loading current dates… | ||
Dates come from the same metadata the engine stamps onto every determination. Source: eCFR (public domain, 17 U.S.C. § 105).
Most rows are 49 CFR. 40 CFR 302.4 is tracked because 49 CFR 172.101 Appendix A now refers to it for the CERCLA list of hazardous substances and their reportable quantities, rather than reproducing it — see the update commitment below. Each CFR title is amended on its own schedule, so each row carries its own title's currency date and links to its own official text.
Where the data comes from
The engine's regulatory data is sourced from the U.S. government's Electronic Code of Federal Regulations (eCFR) API — the same text a roadside officer's reference materials trace back to. The Hazardous Materials Table we run on (and publish as a free CC BY 4.0 download) is byte-verified against the eCFR source, and each section of rule text we rely on is kept as a dated snapshot alongside the date it was fetched.
The update commitment
- Rule-triggered updates. When PHMSA or FMCSA publishes a final rule amending 49 CFR parts 171–180 in the Federal Register, we review it against the engine's rule set and ship any required data or logic update, with fresh per-section currency dates, before the rule's compliance date. That review covers rule text the HMR incorporates by reference as well as the HMR's own sections.
- Worked example — HM-268E. PHMSA published HM-268E (91 FR 49305) on 4 August 2026, effective 2 December 2026. It revises Appendix A to § 172.101 so the appendix no longer reproduces EPA's CERCLA hazardous-substance list and instead refers to 40 CFR 302.4. No engine logic depends on that appendix — reportable-quantity handling reads the "RQ" marking off the shipping paper, not an RQ lookup table — but our published free reference did. On 25 August 2026 we rebuilt that reference from 40 CFR 302.4, added the section to the table above with its own Title 40 currency date, and recorded the pending amendment against § 172.101 in the engine's metadata. The § 172.101 date above stays correct for the text in force until the rule takes effect.
- Scheduled re-verification. At least quarterly, we re-fetch the sections the engine relies on from eCFR and re-verify our data against them — whether or not we believe anything changed. The dates on this page move when that happens.
- Historical records keep their dates. Updating the engine never rewrites a past record. Every determination permanently carries the currency dates it was actually made under — that's the point.
Check us yourself
- Open any HaulGuard compliance record — the regulatory-currency line is printed under the placard determinations.
- Tap any 49 CFR citation in a scan result — it links to the current official text at eCFR.gov.
- Compare the dates above against the eCFR — Title 49 for the HMR sections and 40 CFR 302.4 for the CERCLA list. Each row above also links straight to its own official text. The eCFR shows the current amendment state of every section.