When federal hours-of-service rules apply to a chauffeur

Hours-of-service is the area where we see the most confident misinformation in chauffeur operations, and it has a structural cause: the property-carrying rules are far more widely written about, so summaries of "the HOS rules" are usually summaries of the wrong section. The numbers are similar enough to look right and different enough to matter.

So this page does two things. It quotes the passenger-carrying section directly, and it names the specific places where the property rules leak into people's understanding of it.

The threshold: what makes a vehicle a passenger-carrying CMV

The limits only bite on a commercial motor vehicle, so the definition at 49 CFR 390.5 is the gate. It defines a commercial motor vehicle as a self-propelled or towed motor vehicle used on a highway in interstate commerce to transport passengers or property when the vehicle:

• has a gross vehicle weight rating or gross combination weight rating, or gross vehicle weight or gross combination weight, of 4,536 kg (10,001 pounds) or more, whichever is greater; or
• is designed or used to transport more than 8 passengers (including the driver) for compensation; or
• is designed or used to transport more than 15 passengers, including the driver, and is not used to transport passengers for compensation; or
• is used in transporting placardable quantities of hazardous materials.

Read the structure carefully, because it is a disjunction. Any one branch brings a vehicle in. The weight branch is independent of seating, which means a heavy vehicle can be in scope on weight alone while carrying four people.

The compensation distinction is the one that produces the two different passenger numbers. Carrying for compensation lowers the threshold substantially — more than 8 rather than more than 15 — which is a sensible policy and a frequent source of confusion when the two figures get quoted side by side without their conditions.

The limits themselves

49 CFR 395.5 provides that, subject to the exceptions and exemptions in § 395.1, no motor carrier shall permit or require any driver to drive a passenger-carrying commercial motor vehicle, nor shall any such driver drive one:

• more than 10 hours following 8 consecutive hours off duty; or
• for any period after having been on duty 15 hours following 8 consecutive hours off duty.

And, regardless of the number of motor carriers using the driver's services, no driver shall drive for any period after:

• having been on duty 60 hours in any 7 consecutive days, if the employing motor carrier does not operate commercial motor vehicles every day of the week; or
• having been on duty 70 hours in any period of 8 consecutive days, if the employing motor carrier operates commercial motor vehicles every day of the week.

Two features of that text deserve emphasis because they are routinely lost in summary.

The 10 hours is driving; the 15 hours is on duty. These are different clocks measuring different things. On-duty time includes work that is not driving — and in chauffeur operations, a great deal of the day is exactly that: waiting, loading, positioning, greeting at arrivals. An operation that tracks driving and not duty is tracking the wrong clock for the binding limit.

The weekly limits follow the driver, not the carrier. The regulation says "regardless of the number of motor carriers using the driver's services". For an industry built substantially on affiliate work and chauffeurs who work for more than one operator, that is the sentence with the sharpest edge. A driver can be within limits at each carrier individually and over the limit in fact, and each carrier can be unaware.

Three ways the passenger rules differ from the property rules

If you have read about hours-of-service before, you have almost certainly read about the property-carrying rules. Here is where they diverge.

The break row is worth dwelling on. A well-meaning operator who adopts the property-carrying break requirement is doing something harmless — arguably good practice. An operator who adopts the property-carrying driving limit of 11 hours is doing the opposite, because the passenger limit is 10. Importing the wrong rule set is not symmetrically safe.

The word that changes the answer: interstate

The definition at 390.5 turns on a vehicle used on a highway in interstate commerce. That qualifier is not decoration, and it is where a great deal of California chauffeur work sits.

A Los Angeles operation running airport transfers and point-to-point work entirely within California is in a different position from one running Los Angeles to Las Vegas. The Vegas run crosses a state line, and crossing state lines is how the federal framework engages in the most straightforward way. We wrote about the operational shape of that route in planning a private Los Angeles to Las Vegas transfer, and the compliance dimension is a real part of why that trip is a different product from a city transfer rather than just a longer one.

We want to be careful here rather than tidy. "Interstate commerce" in this context is a term of art with a body of interpretation behind it, and it is not reducible to "did the wheels cross a state line on this trip". An operator whose work mixes intrastate and interstate should get advice specific to their operation instead of taking a rule of thumb from an article — including this one. What we can say without qualification is that the question exists, that it is determinative, and that an operator who has never asked it has a gap.

California's own layer

The federal rules are not the only rules. California maintains its own motor carrier safety regulations in Title 13 of the California Code of Regulations, administered through CHP, and hours-of-service is among the matters they address. That layer is why "the federal threshold does not catch my vehicle" is not a complete answer to "are there limits on my chauffeur's hours".

There is also a connection back to inspections that is easy to miss. Hours-of-Service is one of the Behavioral Analysis and Safety Improvement Categories that CHP uses to select terminals for inspection under the Basic Inspection of Terminals programme — and driver timekeeping records are on the list of what an inspector examines. Hours-of-service compliance is therefore not a standalone obligation; it feeds directly into inspection exposure, as we set out in CHP terminal inspections.

We are not reproducing the California provisions here, for the same reason we did not reproduce CHP's threshold tables: this is material where being current matters more than being convenient, and a secondary rendering of it ages badly. CHP's Commercial Vehicle Section is the right starting point and it is linked in the sources.

What this means for how you dispatch

Setting the legal analysis aside, there is an operational discipline that follows from all of this and it does not depend on which threshold your fleet sits under.

1. Know, per vehicle, whether it is in scope. Not per model, per vehicle. Seating configuration and weight rating are vehicle facts, and the "designed or used" test is applied to the vehicle in front of you.
2. Track duty time, not just driving time. In chauffeur work the on-duty clock is usually the binding one, because so much of the day is waiting rather than driving.
3. Ask contracted chauffeurs about other carriers. The weekly limits follow the driver across carriers, and nothing in your own records will reveal work done elsewhere.
4. Keep timekeeping in a producible form. It is the evidence for compliance and it is explicitly on the list of records examined at a terminal inspection.
5. Do not import the property-carrying numbers. 10 hours driving, 15 hours on duty, 8 consecutive off. Write them down somewhere your dispatchers will see them.

The broader point, and the reason this page exists on a site about transportation technology: hours-of-service is a constraint that a dispatch decision either respects or violates at the moment the assignment is made. It is not something to reconcile afterwards. That is a design property of an operation, and it is one of the places where how a business is built determines whether compliance is routine or perpetually at risk.