Understanding Hours of Service (HOS) Rules for 2026

As a commercial truck driver, your most valuable commodity isn't the freight in your trailer; it's your time. To prevent driver fatigue and reduce highway accidents, the Federal Motor Carrier Safety Administration (FMCSA) strictly regulates exactly how long you can drive and how much rest you must take. These rules are known as the Hours of Service (HOS).

Violating HOS regulations can result in massive fines, points against your CDL, and your truck being placed "out of service" on the side of the highway by the Department of Transportation (DOT). In 2026, with the universal adoption of Electronic Logging Devices (ELDs), tracking these hours is fully automated, meaning compliance is more critical than ever. Here is a simplified breakdown of the core HOS rules every property-carrying driver must know.

The 14-Hour Driving Window

Think of the 14-hour rule as your daily shift limit. Once you come on duty after a required rest period, a 14-hour clock begins ticking. You cannot drive a commercial motor vehicle after you have reached the end of this 14-hour consecutive period.

Crucially, this clock does not stop for breaks, meals, fuel stops, or time spent waiting at a shipper's dock. Once the 14 hours are up, you must take at least 10 consecutive hours off duty before you can drive again.

The 11-Hour Driving Limit

Within that 14-hour daily window, you are only permitted to spend a maximum of 11 hours actually driving. The remaining three hours of your 14-hour shift can be spent doing non-driving work (like loading, inspecting the truck, or fueling) or resting.

The 30-Minute Break Requirement

You cannot drive for 11 hours straight. The FMCSA requires that you take a 30-minute break if you have driven for 8 cumulative hours without at least a 30-minute interruption.

This 30-minute break can be logged as "Off Duty," "Sleeper Berth," or even "On Duty, Not Driving" (such as grabbing lunch or taking a walk), as long as you are not behind the wheel operating the vehicle.

The 60/70-Hour Limit (The Weekly Rule)

In addition to daily limits, there are weekly maximums to prevent chronic exhaustion. The rule you follow depends on whether your carrier operates vehicles every day of the week.

• The 70-Hour/8-Day Rule: If your company operates vehicles every day of the week, you cannot drive after you have been on duty for 70 hours in any 8 consecutive days.
• The 60-Hour/7-Day Rule: If your company does not operate vehicles every day of the week, you cannot drive after accumulating 60 hours on duty in 7 consecutive days.

The 34-Hour Restart

If you reach your 70-hour or 60-hour limit, you are not permanently grounded. You can "reset" your weekly clock back to zero by taking at least 34 consecutive hours completely off duty (or in the sleeper berth). Many Over-The-Road (OTR) drivers use their 34-hour restart over a weekend or when they are waiting for a new load assignment, allowing them to start a fresh week with a full bank of hours.

The Sleeper Berth Provision (Split Shifts)

For drivers whose trucks are equipped with a sleeper berth, the FMCSA offers flexibility on how to take the mandatory 10 hours of rest. You can split your 10-hour off-duty period into two separate shifts.

To use this provision, one rest period must be at least 7 consecutive hours spent entirely in the sleeper berth. The other period must be at least 2 consecutive hours spent either in the sleeper berth, off duty, or a combination of both. When added together, the two periods must equal at least 10 hours. This allows drivers to adapt their rest schedules around traffic congestion or long wait times at loading docks.

Understanding and managing your Hours of Service is a skill that separates average drivers from top-tier professionals. It requires trip planning, time management, and a commitment to safety. At TDSA, we extensively train our students on how to read, log, and legally maximize their HOS to ensure they hit the road as compliant and efficient drivers.