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The HTSUS and 19 CFR navigation-speed trainer

The customs broker exam is open book, so it is decided by how fast you find the governing citation, not by whether you know it. Strong candidates locate a common citation in well under a minute. The only way to get there is repeated timed drilling, and this trainer is that drill: it hands you a citation-shaped task, times you, scores your accuracy, and links you to the official text to confirm. It drills the structure of the public corpus and never republishes it.

Start a timed drill

Four drill modes

Drill mode

Citation Race

You get a citation-shaped task, for example which 19 CFR Part governs broker bonding, and a stopwatch runs while you find the right Part, Chapter, or heading. Your time is scored against the published benchmarks and you link out to confirm at the official source.
 Drill mode

GRI Order Quiz

The six General Rules of Interpretation govern HTSUS classification, and their order of application is a frequent exam trap. This mode gives you a classification scenario and asks which GRI applies, and in what order, timed.
 Drill mode

Chapter Locator

Given a plain-language product, such as a men's cotton knit t-shirt or unroasted coffee beans, you pick the correct HTSUS Chapter and Section, timed. This builds the mental map of the tariff schedule that makes real lookups fast.
 Drill mode

Section-Notes Drill

Section, Chapter, and Additional U.S. Notes are where classification is actually decided and where candidates lose time. This mode poses a note-application question and asks which note governs, timed, linking out to the official note text.

Orient yourself first

Orientation

Corpus map

An original diagram of how the exam corpus is organized: the HTSUS Sections and Chapters, the 19 CFR Parts a broker actually needs, and the CBP directives. Start here if the reference set still feels like a wall of pages.
Parity

Diagnostic practice test

Prefer multiple choice first? The free diagnostic bank scores you by exam category and routes your weak areas back into the timed trainer.

Sample drills

Four worked examples, one per mode, so you can see the shape of a task before you start the clock. In the live trainer these are timed, randomized, and scored, and each links out to the official source to confirm.

  1. Citation Race

    Which Part of Title 19 CFR governs the modernized drawback program (TFTEA drawback)?

    Answer: 19 CFR Part 190 (Modernized Drawback) Confirm at the official source

  2. Chapter Locator

    In which HTSUS Chapter is a men's cotton knit T-shirt classified?

    Answer: HTSUS Chapter 61 (Apparel, knitted or crocheted), Section XI Confirm at the official source

  3. GRI Order

    Which General Rule of Interpretation applies? A retail gift set of a razor, brush, and towel has no single heading covering the whole set; the razor gives the set its essential character.

    Answer: HTSUS GRI 3(b). GRI 3(b) classifies a set by the component that gives it its essential character, here the razor. Confirm at the official source

  4. Section and Chapter Notes

    To apply a U.S.-specific rate provision or a quantity definition that exists only in the U.S. tariff and not the international text, which notes do you consult?

    Answer: HTSUS Additional U.S. Notes: The Additional U.S. Notes to the Chapter. Confirm at the official source

Run these against the clock

The Harmonized Tariff Schedule (HTSUS) and Title 19 of the Code of Federal Regulations (19 CFR) are public United States Government works. This trainer drills their structure and links out to the official text at hts.usitc.gov and ecfr.gov; it does not republish the corpus.