Flexible driving hours may change the rules, but will they change safety?

A driver’s day often doesn’t go as planned. Traffic can get worse, weather can change, loading might take longer, and a delivery that seemed simple in the morning can end up competing with the need for rest.

The Federal Motor Carrier Safety Administration (FMCSA) is looking into whether more flexible hours-of-service rules could help commercial drivers manage their time on the road without sacrificing safety. According to the article Cargo Theft and Cybercrime: How to Protect Commercial Auto Fleets, the agency is running pilot programs to test new ways of organizing driving time, such as split sleeper-berth and split duty periods.

For fleet managers, this raises a bigger question: how do scheduling rules really affect safety? A driver’s day rarely goes exactly as planned. Traffic can slow things down, weather can shift, loading might take longer than expected, and a delivery that seemed easy in the morning can end up competing with the need for rest. The decisions drivers make in these moments are shaped by hours-of-service rules designed to keep everyone safe. Still, sometimes a schedule that meets the rules doesn’t match what a driver actually faces.

This leads to an important question for fleet leaders: If drivers have more control over their time, can they make safer decisions, or will work pressures just fill up any extra flexibility the rules allow?

A working day rarely follows the plan

Hours-of-service rules set limits on driving time, work periods, and rest. But following those rules can look very different depending on traffic, weather, customer schedules, and whether there are safe places to stop. Imagine a driver near the end of a long shift when traffic slows down or bad weather hits. The original plan might not be the safest option anymore. In these moments, flexibility could help.

The Flexible Sleeper Berth pilot looks at whether drivers can split their required 10-hour off-duty period into segments. The Split Duty Period pilot tests if certain non-driving times can pause the 14-hour driving window for up to three hours. Neither assumes that more flexibility always leads to safer outcomes. That’s what the pilots are meant to find out.

More options do not always mean more control

There’s a difference between having more choices and actually being able to use them. A driver might be allowed to rest differently, but that flexibility exists in a world where delivery deadlines, dispatch decisions, customer demands, and pay structures all affect how time is used. If those pressures don’t change, the new options might not give drivers as much control as intended.

The FMCSA has noticed a related issue in its plans to monitor shippers. The agency wants to see if more flexibility leads to longer wait times or other ways drivers might be taken advantage of. Time spent waiting at a loading dock isn’t always time a driver can use as they want. For fleet leaders, this means looking beyond whether a schedule follows the new rules. They also need to ask if dispatch practices, customer agreements, and performance goals let drivers use flexibility in ways that support good rest and sound decisions.

The human decisions behind a flexible system

When things change on the road, drivers need more than just permission to adjust their schedules. They need the knowledge and judgment to know which options make sense in each situation. A driver might know the technical rules for rest periods but still have trouble figuring out the best way to use them when dealing with weather, fatigue, traffic, and delivery demands.

Good training helps close that gap. It gives people a chance to work through real-life scenarios, weigh different factors, and see the results of their choices before they have to make them on the road. This approach is a key part of IMPROVLearning: people need to practice handling situations that can’t be perfectly planned. Improv here doesn’t mean ignoring rules or making things up as you go. It means learning to see what’s happening, recognize your options, and respond well when things don’t go as expected. Supervisors can support these lessons by talking through real situations instead of treating scheduling as just paperwork.

When drivers can talk about the real challenges they face, fleet leaders get a better sense of whether their policies are working. The goal isn’t to put all the responsibility on the driver. It’s to help drivers and supervisors make better decisions in a system that supports safety.

What fleet leaders should watch as flexibility evolves

Even before the pilot results show if these new approaches improve safety, companies can look at whether their current practices give drivers real control over their time.

• How much time do drivers lose waiting?
• How often do delivery demands make it hard to adjust to changing conditions?
• Do dispatchers have clear guidance for supporting safe scheduling?

A policy might say what’s allowed, but the company culture and how things are run shape what people actually do. Fewer scheduling conflicts or happier drivers might be good signs, but neither alone proves that more flexibility makes things safer. The FMCSA’s pre-tests involved nine drivers from three carriers for each program over six weeks. That’s just a first step, not enough to say either approach will make the whole industry safer.

For now, the best approach isn’t to assume flexibility is the answer or the problem. It’s to understand when flexibility might help drivers make better choices and what companies need to do to support that.

Flexibility works only when the system supports it

It’s easy to see why more scheduling flexibility is appealing. But the results depend on more than just the rules. Drivers need to know their options. Supervisors need to back up good decisions.

Fleet operations need to consider the pressures that affect how time is used. Rules set the limits, but people still have to read the situation, make choices, and adjust to what’s happening around them. A more flexible schedule only helps if the people using it are prepared, supported, and able to make the most of it.