Car Hauler Hours of Service: A Practical Planning Guide for Interstate Fleets

Interstate car-hauling dispatch cannot be planned around appointment times alone. A load may look profitable and geographically efficient, yet still create an HOS problem if loading delays, traffic, vehicle inspections, fueling, or delivery paperwork consume the driver’s available time. Use the following FMCSA property-carrying limits as a planning baseline, then verify current requirements and any applicable exceptions before assigning a trip. (fmcsa.dot.gov)

The standard FMCSA HOS limits for property carriers

For a property-carrying driver, the standard restart of a daily work cycle requires 10 consecutive hours off duty. After that rest period, the driver may drive up to 11 hours. The driver also may not drive beyond the 14th consecutive hour after coming on duty. Off-duty time taken during that window does not extend the 14-hour period. (fmcsa.dot.gov)

The 11-hour driving limit and 14-hour window are separate controls. A driver can reach the 14-hour window before using all 11 driving hours, especially when a car hauler spends time at auctions, dealerships, yards, repair facilities, or delivery locations. Dispatch should therefore track both remaining driving time and remaining window time rather than relying on mileage alone. The second sentence is a planning application of the FMCSA limits, not a substitute for reviewing the driver’s actual record of duty status. (fmcsa.dot.gov)

The 30-minute break requirement

A driver must take a 30-minute break after accumulating eight hours of driving without a qualifying interruption of at least 30 minutes. The interruption may be non-driving time recorded as off duty, sleeper berth, on-duty not driving, or a combination of those statuses taken consecutively. (fmcsa.dot.gov)

For dispatch purposes, do not wait until the driver is approaching the eight-hour mark to search for a place to stop. Build the break into the route near a practical fuel, inspection, meal, or staging opportunity. The exact qualifying status and timing must be confirmed against the driver’s ELD record and current FMCSA requirements.

The 60/70-hour limit and optional 34-hour restart

A property-carrying driver may not drive after reaching the applicable 60- or 70-hour on-duty limit in seven or eight consecutive days. FMCSA’s summary also states that a driver may restart the seven- or eight-day period after taking 34 or more consecutive hours off duty. (fmcsa.dot.gov)

The 34-hour restart is an optional planning tool, not an automatic requirement for every weekly schedule. Before using it, the carrier and driver should confirm which cycle applies, whether the restart is appropriate for the operation, and whether any exception or special rule changes the analysis. Review current FMCSA guidance for individual applicability.

Dispatch-planning checklist for car haulers

• Confirm the driver’s current duty status, available driving time, remaining 14-hour window, and weekly on-duty total before accepting or assigning the load.
• Allow time for vehicle inspections, securement, loading, unloading, fueling, traffic, weather delays, customer check-in, and proof-of-delivery work.
• Identify a realistic location for the required 30-minute interruption before the driver reaches eight cumulative driving hours.
• Do not promise a delivery appointment based only on route miles. Compare the appointment with the driver’s available hours and the facility’s expected dwell time.
• Create an escalation plan for delays. The dispatcher should know when to reschedule, hold the load, transfer the assignment, or direct the driver to a safe stopping location.
• Document dispatch changes, customer instructions, and appointment updates so the driver and office are working from the same information.

This checklist supports operational planning; it does not determine whether a specific driver may legally drive. HOS eligibility depends on the driver’s complete record, the operation, and any applicable exceptions or exemptions. (fmcsa.dot.gov)

ELD training and malfunction readiness

FMCSA describes an ELD as a device that synchronizes with the vehicle’s engine and automatically records driving time and other HOS record information. Drivers must know how to review, annotate, certify, and transfer their records, while carriers should train both drivers and administrative staff on the selected device. (fmcsa.dot.gov)

• Train each driver and relevant office employee on the fleet’s specific ELD workflow, including certification and data transfer.
• Keep the device updated and make sure drivers know how to recognize diagnostic and malfunction notifications.
• If the ELD malfunctions, the driver must note the malfunction and provide written notice to the carrier within 24 hours.
• If accurate HOS recording is affected, the driver must reconstruct the current 24-hour period and previous seven consecutive days when necessary and continue preparing records manually until the device is serviced.
• The carrier must correct, repair, replace, or service the malfunctioning ELD within eight days of discovery or driver notification, whichever occurs first.
• Maintain a process for paper records or other permitted manual records during the malfunction period.

FMCSA’s training material states that manual records during an ELD malfunction cannot continue for more than eight days unless an extension is obtained through the applicable FMCSA process. Carriers should review the current FMCSA instructions and their ELD provider’s procedures before relying on an emergency workflow. (fmcsa.dot.gov)

What TruckTA can and cannot do

TruckTA can help a car-hauling company organize dispatch information, driver records, and supporting documents in one operational workflow. It does not calculate legal HOS eligibility, interpret every exception, replace an ELD, or certify that a trip complies with FMCSA requirements. Carriers and drivers remain responsible for reviewing current rules, maintaining accurate records, and making safe operating decisions.

Use TruckTA to organize dispatch and driver records, while checking current HOS requirements, ELD procedures, and malfunction instructions directly with FMCSA before relying on a planning decision.

Frequently asked questions

Does the 14-hour window pause when a driver takes time off duty?

No. Under the standard property-carrying rule summarized by FMCSA, off-duty time does not extend the 14-hour period. The driver must stop driving when the applicable window ends, even if fewer than 11 driving hours have been used. (fmcsa.dot.gov)

Can every car hauler use the 34-hour restart?

FMCSA’s summary describes a 34-hour or longer off-duty period as a way to restart the applicable seven- or eight-day period. Whether it applies to a particular driver or operation should be confirmed through current FMCSA review. (fmcsa.dot.gov)