The number that determines whether a pedal-equipped electric tricycle belongs in the US low-speed bicycle category is not 750 W. It is 170 lb, the operator weight written into the motor-only speed test, run on a paved level surface with the pedals contributing nothing. Read the definition closely and the deciding conditions turn out to be a test setup and a pedal requirement, not a wattage figure a factory can print on a quote. A trike can look compliant in a catalogue and still leave both conditions unrecorded in the brief you send.
That changes what matters first for anyone sourcing custom, OEM or wholesale volume into the US market. Pedal and motor wording in your brief outranks the frame spec sheet, because the frame is the part every supplier already documents well. And 16 CFR 1512 as it appears in the 2025 annual CFR volume describes a category; it is not a certificate for the model you are about to sample, and an annual volume cannot be assumed to carry every revision made since.
The Two Numbers That Define This Tricycle
The category description reads plainly enough: a two- or three-wheeled vehicle with fully operable pedals and an electric motor of less than 750 watts (1 h.p.), whose maximum speed on a paved level surface, when powered solely by such a motor while ridden by an operator who weighs 170 pounds, is less than 20 mph. Three conditions ride together in that sentence: a pedal requirement, a wattage cap, and a speed figure tied to a stated test.
Only the wattage cap gets stated as a matter of routine. A supplier quoting 750 W and 20 mph has given you one condition and a claim, with no surface, no rider weight and no statement that the motor was the only thing turning the wheels. Buyers who treat that line as a classification answer are one sample away from discovering which half of the sentence was never addressed. Beyond that, the definition is not a road-use approval for the trike you import.
Pedals That Must Do Real Work
Fully operable pedals is a functional phrase with no measurement method attached: no tolerance, no acceptance threshold, no test in the passage. That absence is not a gap to fill with an invented number; it is a reason to convert the phrase into questions the supplier answers in writing. Does the crank drive the rear axle, or does the chain end at a decorative freewheel? Can the pedals be removed or folded to fit a crate, and does the assembly sheet tell the end user to refit them? What crank length and pedal spacing are standard, and what changes on a custom run?
The obvious objection is that every trike in this class ships with pedals, so brief space is better spent elsewhere. Except a pedal set that is vestigial, or that comes off for crating and never goes back on, is exactly what moves a model out of the described category and into a review of its own. You do not need a pedalling range or a gear ratio to protect yourself here; you need the supplier's description of the drive on file beside the sample you approve.
Cargo Trike, Moped, or Bicycle?
Three visible differences do the separating: pedals that function, a motor under the 750 W line, a motor-only speed below 20 mph under the stated test.
A heavy cargo trike built around a hub motor with a throttle and pedals fitted mostly for appearance would fail the first axis before anyone argues a number. A moped-type machine with a step-through frame and no crank is a different vehicle class in the same catalogue and raises different questions before it ships. One factory can hold all of it on a single price list, and the sales contact quotes whichever line you point at, in whatever wording you accept. Naming the configuration rather than the product family keeps the quotation comparable across two or three suppliers. The three axes are also the cheapest thing to check at sample stage, because they are visible without instruments: look at the crank, read the motor label, ask for the record of how the speed figure was produced.
What the category description does not settle is where a cargo configuration, a mobility scooter or a street-registration question lands. Those need their own line in the brief instead of an assumption borrowed from this one.
Partly Assembled Still Has to Meet the Rule
A covered bicycle must meet the requirements in the condition in which it is offered for sale to consumers, and one offered disassembled or partly assembled must still meet them after assembly according to the manufacturer's instructions. Read that as a packing and documentation clause, because that is how it behaves in a purchase order. What arrives in the crate, what the instruction sheet walks the end user through, and who signs off that the assembled condition is the one described are all things you specify and then accept at sample approval.
A skeptic would say the compliance duty belongs to the importer and the brief should stay commercial. Up to a point, yes; the legal obligation is not yours to write into a purchase order. The crate condition and the instruction set are still yours to specify and to accept, which puts them in the brief no matter where the duty sits.
Treat Motor, Battery and Charger as One Unit
A system approach treats the device, the battery, the cells and the charger as one thing that has to be compatible and function safely together. Buying them as three line items and letting each one look fine on paper is how a matched set becomes a mismatched one. So put the electrical side of the trike in the brief as a single item: the supplier states the matched combination and the basis on which they claim compatibility, in writing, and that statement travels with the sample approval.
Weigh the standing of the document behind the idea. It is a 2023 communication carrying recommendations and a compliance call, and its fit differs by configuration and by which standard version applies, with later proposals to be checked separately. The brief therefore asks the supplier to state their basis; it does not declare that every relevant standard is mandatory nationwide.
RFQ Lines to Send Before Sample Approval
On your target supplier, nothing is on record yet: not custom capability, not MOQ, not the basis of the quotation, not lead time, not available moulds, not one certification document anyone has actually seen. Each is a written question with a named owner on the supplier side, and each unanswered one stays an open item rather than a blank you fill in from experience. The electrical and pedal questions belong on that same list, not in a technical annex nobody signs.
The cost of leaving them blank is not abstract. Every line you skip becomes a change order or a re-quote after the sample is approved, at the point where the schedule is least forgiving.
Today's move is small and it closes most of the exposure. Paste four to six lines into the brief you are about to send: pedal geometry and drive engagement, continuous versus peak wattage, the compatibility statement, and how a partly assembled crate meets the described condition after assembly. Require written answers filed with the sample approval, and treat every unanswered line as unresolved rather than settling it internally.
Discuss the brief